{"common":{"save":0,"post_id":"722","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"321","post_id":"722","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":" T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c : <br\/> $11^6 . 7^5 : (11^3 . 7^2) = ?$ <br\/> \u0110\u00e1p \u00e1n l\u00e0: ","select":["A. $11^2.7^3$","B. $11^3.7^7$ ","C. $11^3.7^3$ "],"hint":"Ta ti\u1ebfn h\u00e0nh chia c\u00e1c l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> <b> * Quy t\u1eafc: <\/b> <br\/> Khi chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 (kh\u00e1c 0) ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 tr\u1eeb c\u00e1c s\u1ed1 m\u0169 <br\/> $a^m : a^n = a^ {m - n} (a \\neq 0; m \\geq n)$ <br\/> <b> C\u1ee5 th\u1ec3: <\/b> Ta l\u1ea5y $(11^6: 11^3).(7^5 : 7^2)$<br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Theo quy t\u1eafc chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta c\u00f3: <br\/> $11^6 . 7^5 : (11^3 . 7^2) = (11^6 : 11^3) . (7^5 : 7^2) = 11^{6 - 3} . 7^{5 - 2} = 11^3.7^3$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. $11^3.7^3$<\/span> <br\/><span class='basic_green'>","column":3}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:40"},{"id":"322","post_id":"722","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":" T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c : <br\/> $7^{11} . 3^8 : (3^6 . 7^{10}) = ?$ <br\/> \u0110\u00e1p \u00e1n l\u00e0: ","select":["A. $7.3^2$","B. $7^2.3^6$ ","C. $7^{11}.3^2$ "],"hint":"Ta ti\u1ebfn h\u00e0nh chia c\u00e1c l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> <b> * Quy t\u1eafc: <\/b> <br\/> Khi chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 (kh\u00e1c 0) ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 tr\u1eeb c\u00e1c s\u1ed1 m\u0169 <br\/> $a^m : a^n = a^ {m - n} (a \\neq 0; m \\geq n)$ <br\/> <b> C\u1ee5 th\u1ec3: <\/b> Ta l\u1ea5y $(7^{11}: 7^{10}).(3^8 : 3^6)$<br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Theo quy t\u1eafc chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 ta c\u00f3: <br\/> $7^{11} . 3^8 : (3^6 . 7^{10}) = (7^{11} : 7^{10}) . (3^{8} : 3^{6}) = 7^{11 - 10} . 3^{8 - 6} = 7.3^2$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. $7.3^2$<\/span> <br\/><span class='basic_green'>","column":3}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:40"},{"id":"323","post_id":"722","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":"T\u00ecm x bi\u1ebft: <br\/> <center><img src='img\/6.jpg' \/><\/center> <br\/> $6x + 2.4 = 5^3:5^2 + 9$","select":["A. x = 1 ","B. x = 4","C. x = 5","D. x = 6"],"hint":" Trong bi\u1ec3u th\u1ee9c c\u00f3 l\u0169y th\u1eeba ta t\u00ednh l\u0169y th\u1eeba tr\u01b0\u1edbc. <br\/> 6x l\u00e0 s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft, mu\u1ed1n t\u00ecm s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft ta l\u1ea5y t\u1ed5ng tr\u1eeb \u0111i s\u1ed1 h\u1ea1ng \u0111\u00e3 bi\u1ebft","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/><b> B\u01b0\u1edbc 1: <\/b> T\u00ednh $5^3 : 5^2 = ?$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> 6x l\u00e0 s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft ta l\u1ea5y t\u1ed5ng tr\u1eeb \u0111i s\u1ed1 h\u1ea1ng \u0111\u00e3 bi\u1ebft <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*} 6x + 2.4 &= 5^3:5^2 + 9 \\\\ 6x + 8 &= 5^{3 - 2} + 9 \\\\ 6x + 8 &= 5 + 9 \\\\ 6x &= 14 - 8 \\\\ 6x &= 6 \\\\ x &= 1 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. x = 1 <\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:40"}]}