Lũy thừa với số mũ tự nhiên. Nhân hai lũy thừa cùng cơ số

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Lũy thừa với số mũ tự nhiên. Nhân hai lũy thừa cùng cơ sốBài tập cơ bản

{"common":{"save":0,"post_id":"718","level":1,"total":20,"point":5,"point_extra":0},"segment":[{"id":"251","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"L\u0169y th\u1eeba b\u1eadc 3 c\u1ee7a 8 vi\u1ebft l\u00e0:","select":["A. $3^{8}$ ","B. $8^{3}$ "],"hint":"L\u0169y th\u1eeba b\u1eadc 3 c\u1ee7a 8 ngh\u0129a l\u00e0 8 \u0111\u01b0\u1ee3c l\u1ea5y 3 l\u1ea7n","explain":"H\u01b0\u1edbng d\u1eabn: <br\/> <\/span>L\u0169y th\u1eeba b\u1eadc 3 c\u1ee7a 8 ngh\u0129a l\u00e0 8 \u0111\u01b0\u1ee3c l\u1ea5y 3 l\u1ea7n <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> L\u0169y th\u1eeba b\u1eadc 3 c\u1ee7a 8 l\u00e0: <br\/> 8 . 8 . 8 = $8^{3}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> <br\/> L\u01b0u \u00fd: l\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a: <br\/>$ a ^ {n}$ = a . a . a....a (n th\u1eeba s\u1ed1, $ n\\neq 0$) <\/i> <\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"252","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"L\u0169y th\u1eeba b\u1eadc 5 c\u1ee7a a vi\u1ebft l\u00e0:","select":["A. $a^{5}$ ","B. $5^{a}$ "],"hint":"L\u0169y th\u1eeba b\u1eadc 5 c\u1ee7a a ngh\u0129a l\u00e0 a \u0111\u01b0\u1ee3c l\u1ea5y 5 l\u1ea7n","explain":"H\u01b0\u1edbng d\u1eabn: <br\/> <\/span>L\u0169y th\u1eeba b\u1eadc 5 c\u1ee7a a ngh\u0129a l\u00e0 a \u0111\u01b0\u1ee3c l\u1ea5y 5 l\u1ea7n <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> L\u0169y th\u1eeba b\u1eadc 5 c\u1ee7a a l\u00e0: <br\/> a . a. a . a . a = $a^{5}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span> <br\/> L\u01b0u \u00fd: l\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a: <br\/>$ a ^ {n}$ = a . a . a....a (n th\u1eeba s\u1ed1, $ n\\neq 0$) <\/i> <\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"253","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='img\/4.jpg' \/><\/center> <br\/> $a^{n}. a^{m}$ = ?:","select":["A. $a ^{m + n}$","B. $a^{m.n}$","C. $(a.a)^{m.n}$"],"hint":"","explain":"B\u00e0i gi\u1ea3i:<\/span><br\/> Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169 <br\/> $a ^ {n}. a ^ {m} = a^{m + n}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"254","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='img\/4.jpg' \/><\/center> <br\/> Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a^{n}$ th\u00ec n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0:","select":["A. n l\u00e0 c\u01a1 s\u1ed1","B. n l\u00e0 s\u1ed1 m\u0169"],"hint":"","explain":"B\u00e0i gi\u1ea3i:<\/span><br\/> Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a ^ {n}$ th\u00ec a l\u00e0 c\u01a1 s\u1ed1, n l\u00e0 s\u1ed1 m\u0169 <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"255","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang. <br\/> 7 . 7 . 7 . 5 . 5 . 5 . 7 = ?","select":["A. $7^{3} . 5 ^{3}$ ","B. $7^{4} . 5 ^{3}$ ","C. $7^{4} . 3 ^{5}$ ","D. $4^{7} . 5 ^{3}$ "],"hint":"L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 th\u1eeba s\u1ed1 a \u0111\u01b0\u1ee3c nh\u00e2n n l\u1ea7n","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 th\u1eeba s\u1ed1 a \u0111\u01b0\u1ee3c nh\u00e2n n l\u1ea7n <br\/> \u0110\u1ebfm xem c\u00f3 bao nhi\u00eau th\u1eeba s\u1ed1 7 th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 m\u0169 c\u1ee7a c\u01a1 s\u1ed1 7 <br\/> C\u00f3 bao nhi\u00eau th\u1eeba s\u1ed1 5 th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 m\u0169 c\u1ee7a c\u01a1 s\u1ed1 5 <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> 7 . 7 . 7 . 5 . 5 . 5 . 7 = 7 . 7 . 7 . 7 . 5 . 5 .5 <br\/> $\\underbrace{7 . 7 . 7 . 7}_{4}.\\underbrace{ 5 . 5 . 5}_{3} = 7^4.5^3$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"256","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang. <br\/> 11. 11 . 11 . 9 . 9 . 9 . 9 = ?","select":["A. $3^{11} . 4 ^{9}$ ","B. $3^{11} . 9 ^{4}$ ","C. $11^{3} . 9 ^{4}$ ","D. $11^{3} . 4 ^{9}$ "],"hint":"L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 th\u1eeba s\u1ed1 a \u0111\u01b0\u1ee3c nh\u00e2n n l\u1ea7n","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 th\u1eeba s\u1ed1 a \u0111\u01b0\u1ee3c nh\u00e2n n l\u1ea7n <br\/> \u0110\u1ebfm xem c\u00f3 bao nhi\u00eau th\u1eeba s\u1ed1 11 th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 m\u0169 c\u1ee7a c\u01a1 s\u1ed1 11 <br\/> C\u00f3 bao nhi\u00eau th\u1eeba s\u1ed1 9 th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 m\u0169 c\u1ee7a c\u01a1 s\u1ed1 9 <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/>$\\underbrace{ 11 . 11 . 11}_{3}.\\underbrace{ 9 . 9 . 9 . 9}_{4} = 11^3.9^4$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C<\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"257","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["7"],["3"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> <table><tr><th>L\u0169y th\u1eeba<\/th><th>C\u01a1 s\u1ed1<\/th><th>S\u1ed1 m\u0169<\/th><\/tr><tr><td>$7^3$<\/td><td>_input_<\/td><td>_input_<\/td><\/tr><\/table>","hint":"Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a^n$ th\u00ec a l\u00e0 c\u01a1 s\u1ed1, n l\u00e0 s\u1ed1 m\u0169","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a^n$ th\u00ec a l\u00e0 c\u01a1 s\u1ed1, n l\u00e0 s\u1ed1 m\u0169 <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $7^3$ th\u00ec 7 l\u00e0 c\u01a1 s\u1ed1, 3 l\u00e0 s\u1ed1 m\u0169 <br\/> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: <br\/> <table><tr><th>L\u0169y th\u1eeba<\/th><th>C\u01a1 s\u1ed1<\/th><th>S\u1ed1 m\u0169<\/th><\/tr><tr><td>$7^3$<\/td><td>7<\/td><td>3<\/td><\/tr><\/table>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"258","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["2"],["9"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> <table><tr><th>L\u0169y th\u1eeba<\/th><th>C\u01a1 s\u1ed1<\/th><th>S\u1ed1 m\u0169<\/th><\/tr><tr><td>$2^9$<\/td><td>_input_<\/td><td>_input_<\/td><\/tr><\/table>","hint":"Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a^n$ th\u00ec a l\u00e0 c\u01a1 s\u1ed1, n l\u00e0 s\u1ed1 m\u0169","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $a^n$ th\u00ec a l\u00e0 c\u01a1 s\u1ed1, n l\u00e0 s\u1ed1 m\u0169 <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Trong ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba $2^9$ th\u00ec 2 l\u00e0 c\u01a1 s\u1ed1, 9 l\u00e0 s\u1ed1 m\u0169 <br\/> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: <br\/> <table><tr><th>L\u0169y th\u1eeba<\/th><th>C\u01a1 s\u1ed1<\/th><th>S\u1ed1 m\u0169<\/th><\/tr><tr><td>$2^9$<\/td><td>2<\/td><td>9<\/td><\/tr><\/table>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"259","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<center><img src='img\/6.jpg' \/><\/center> <br\/> L\u1eadp ph\u01b0\u01a1ng c\u1ee7a a ngh\u0129a l\u00e0:","select":["A. $a^2$ ","B. $a^1$","C. $a^3$ "],"hint":"L\u1eadp ph\u01b0\u01a1ng hay c\u00f2n g\u1ecdi l\u00e0 l\u0169y th\u1eeba b\u1eadc 3","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>L\u1eadp ph\u01b0\u01a1ng hay c\u00f2n g\u1ecdi l\u00e0 l\u0169y th\u1eeba b\u1eadc 3<\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> L\u1eadp ph\u01b0\u01a1ng c\u1ee7a a hay ch\u00ednh l\u00e0 $a^3$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: $a^3$<\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"260","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a a th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng n \u0110\u00daNG <\/b> hay SAI <\/b>? ","select":["A. \u0110\u00daNG ","B. SAI"],"hint":"","explain":"B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a <br\/> $a^{n} = \\underbrace{ a.a... a }_{n \\text{th\u1eeba s\u1ed1}}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n l\u00e0: SAI<\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"261","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["16"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='img\/7.jpg' \/><\/center> <br\/> T\u00ednh: $2^4$ = _input_","hint":"$2^4$ l\u00e0 t\u00edch c\u1ee7a 4 th\u1eeba s\u1ed1 2","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>$2^4$ l\u00e0 t\u00edch c\u1ee7a 4 th\u1eeba s\u1ed1 2 <br\/> Hay $2^4 = 2 . 2 . 2 . 2$ <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $2^4$ l\u00e0 t\u00edch c\u1ee7a 4 th\u1eeba s\u1ed1 2 <br\/> Hay $2^4$ = 2 . 2 . 2 . 2 = 16 <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 16<\/span> <br\/> L\u01b0u \u00fd: L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a <br\/>$ a ^ {n}$ = a . a . a....a (n th\u1eeba s\u1ed1, $ n\\neq 0$) <\/i> <\/span>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"262","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["343"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='img\/7.jpg' \/><\/center> <br\/> T\u00ednh: $7^3$ = _input_","hint":"$7^3$ l\u00e0 t\u00edch c\u1ee7a 3 th\u1eeba s\u1ed1 7","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>$7^3$ l\u00e0 t\u00edch c\u1ee7a 3 th\u1eeba s\u1ed1 7 <br\/> Hay $7^3 = 7 . 7 . 7$ <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $7^3$ l\u00e0 t\u00edch c\u1ee7a 3 th\u1eeba s\u1ed1 7 <br\/> Hay $7^3$ = 7 . 7 . 7 = 343 <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 343<\/span> <br\/> L\u01b0u \u00fd: L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a <br\/>$ a ^ {n}$ = a . a . a....a (n th\u1eeba s\u1ed1, $ n\\neq 0$) <\/i> <\/span>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"263","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1024"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='img\/7.jpg' \/><\/center> <br\/> T\u00ednh: $4^5$ = _input_","hint":"$4^5$ l\u00e0 t\u00edch c\u1ee7a 5 th\u1eeba s\u1ed1 4","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>$4^5$ l\u00e0 t\u00edch c\u1ee7a 5 th\u1eeba s\u1ed1 4 <br\/> Hay $4^5 = 4 . 4 . 4 . 4 . 4 $ <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $4^5$ l\u00e0 t\u00edch c\u1ee7a 5 th\u1eeba s\u1ed1 4 <br\/> Hay $4^5 $= 4 . 4 . 4 . 4 . 4 = 1024 <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1024<\/span> <br\/> L\u01b0u \u00fd: L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau, m\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a <br\/>$ a ^ {n}$ = a . a . a....a (n th\u1eeba s\u1ed1, $ n\\neq 0$) <\/i> <\/span>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"264","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: <br\/> $5^3.5^8$ = ?","select":["A. $5^{11}$ ","B. $5^{24}$","C. $25^{11}$ "],"hint":"Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169<br\/> $a^m.a^n = a^ {m + n}$<\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> $5^3.5^8 = 5 ^ {3 + 8} = 5^{11}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: $A. 5^{11}$<\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"265","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: <br\/> $4^7.4^5$ = ?","select":["A. $4^{12}$ ","B. $8^{12}$","C. $16^{20}$ "],"hint":"Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169<br\/> $a^m.a^n = a^ {m + n}$<\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> $4^7.4^5 = 4 ^ {7 + 5} = 4^{12}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: $A. 4^{12}$<\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"266","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1024"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='img\/2.jpg' \/><\/center> <br\/> T\u00ednh: $4^2.4^3$ = _input_","hint":"$4^2$ l\u00e0 t\u00edch c\u1ee7a 2 th\u1eeba s\u1ed1 4, $4^3$ l\u00e0 t\u00edch c\u1ee7a 3 th\u1eeba s\u1ed1 4","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft t\u00edch $4^2. 4^3$ d\u01b0\u1edbi d\u1ea1ng l\u0169y th\u1eeba <br\/>$4^2. 4^3 = 4 ^ {2 + 3}$ <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a $4^{2+3}$ <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*}4^2.4^3 =& 4^{2 + 3}\\\\ =& 4^5 \\\\ =& 4 . 4 . 4 . 4 . 4 \\\\=& 1024 \\end{align*}$ <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1024<\/span> <br\/> L\u01b0u \u00fd: Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169<br\/> $a^m.a^n = a^ {m + n}$<\/i> <\/span>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"267","post_id":"718","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["3125"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='img\/2.jpg' \/><\/center> <br\/> T\u00ednh: $5^2.5^3$ = _input_","hint":"$5^2$ l\u00e0 t\u00edch c\u1ee7a 2 th\u1eeba s\u1ed1 5, $5^3$ l\u00e0 t\u00edch c\u1ee7a 3 th\u1eeba s\u1ed1 5","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft t\u00edch $5^2. 5^3$ d\u01b0\u1edbi d\u1ea1ng l\u0169y th\u1eeba <br\/>$5^2. 5^3 = 5 ^ {2 + 3}$ <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a $5^{2+3}$ <\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*}5^2.5^3 =& 5^{2 + 3}\\\\ =& 5^5 \\\\ =& 5 . 5 . 5 . 5 . 5 \\\\=& 3125 \\end{align*}$ <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 3125<\/span> <br\/> L\u01b0u \u00fd: Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169<br\/> $a^m.a^n = a^ {m + n}$<\/i> <\/span>"}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"268","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn d\u1ea5u th\u00edch h\u1ee3p thay cho d\u1ea5u ?<\/span>: <br\/> $5^3$ ?<\/span> $3^5$","select":["A. > ","B. <","C. = "],"hint":"T\u00ednh $5^3 = ?$ v\u00e0 $3^5 = ?$","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00ednh $5^3 = ?$ v\u00e0 $3^5 = ?$ r\u1ed3i so s\u00e1nh<\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Ta c\u00f3: $5^3 = 5 . 5 . 5 = 125$ <br\/> $3^5 = 3 . 3 . 3 . 3 . 3 = 243$ <br\/> V\u00ec 125 < 243 n\u00ean $5^3 < 3^5$<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. < <\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"269","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn d\u1ea5u th\u00edch h\u1ee3p thay cho d\u1ea5u ?<\/span>: <br\/> $2^3.2^5$ ?<\/span> $2^8$","select":["A. > ","B. <","C. = "],"hint":"T\u00ednh $2^3.2^5 = ?$ v\u00e0 so s\u00e1nh v\u1edbi $2^8$","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00ednh $2^3.2^5 = ?$ v\u00e0 so s\u00e1nh v\u1edbi $2^8$ <\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Ta c\u00f3: $2^3.2^5 = 2^{3 + 5} = 2^8$ <br\/> V\u00ec $2^8 = 2^8$ n\u00ean $2^3.2^5$ = $2^8$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. = <\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"},{"id":"270","post_id":"718","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn d\u1ea5u th\u00edch h\u1ee3p thay cho d\u1ea5u ?<\/span>: <br\/> $3^2.3^3$ ?<\/span> $5^4$","select":["A. > ","B. <","C. = "],"hint":"T\u00ednh $3^2.3^3$ v\u00e0 $5^4 = ?$","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00ednh $3^2.3^3$ v\u00e0 $5^4 = ?$ r\u1ed3i so s\u00e1nh<\/span> <br\/><br\/>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Ta c\u00f3: $3^2.3^3 = 3^ {2 + 3} = 3^5 = 3 . 3 . 3 . 3 . 3 = 243$ <br\/> $5 ^ 4 = 5 . 5 . 5 . 5 = 625 $ <br\/> V\u00ec 243 < 625 n\u00ean $3^2.3^3 < 5^4$<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. < <\/span>","column":3}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:39"}]}