{"segment":[{"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":[[["-132"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center>11 . (-12) = _input_","hint":" ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>11 . (-12) = - (11 . 12) = -132<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -132<\/span><\/span> <br\/> "}]}],"id_ques":1251},{"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":[[["-270"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center>18 . (-15) = _input_","hint":" ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>18 . (-15) = - (18 . 15) = -270<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -270<\/span><\/span> <br\/> "}]}],"id_ques":1252},{"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":[[["121"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center>$(-11)^2$ = _input_","hint":" ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>$a^2$ = a . a<br\/>Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>$(-11)^2$ = (-11) . (-11) = 11 . 11 = 121<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> 121<\/span><\/span> <br\/> "}]}],"id_ques":1253},{"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":" (-14) . (-10) <span class='basic_hoi_black'>?<\/span> 7 . 20","select":[" >"," < "," = "],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf<br\/>B\u01b0\u1edbc 2: So s\u00e1nh c\u00e1c k\u1ebft qu\u1ea3 \u0111\u00f3 v\u1edbi nhau<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/> $\\underbrace{(-14) . (-10)}_{140} $ <span class='basic_hoi_black'>?<\/span> $\\underbrace{7 . 20}_{140} $<br\/>N\u00ean (-14) . (-10) = 7 . 20<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> =<\/span><\/span> <br\/> ","column":3}]}],"id_ques":1254},{"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":" (-41) . (-4) <span class='basic_hoi_black'>?<\/span> 6 . 25","select":[" >"," < "," = "],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf<br\/>B\u01b0\u1edbc 2: So s\u00e1nh c\u00e1c k\u1ebft qu\u1ea3 \u0111\u00f3 v\u1edbi nhau<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/> $\\underbrace{(-41) . (-4)}_{164} $ <span class='basic_hoi_black'>?<\/span> $\\underbrace{6 . 25}_{150} $<br\/> M\u00e0 164 > 150<br\/>N\u00ean (-41) . (-4) > 6 . 25<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> ><\/span><\/span> <br\/> ","column":3}]}],"id_ques":1255},{"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":" (-15) . 8 <span class='basic_hoi_black'>?<\/span> 11 . (-12)","select":[" >"," < "," = "],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf<br\/>B\u01b0\u1edbc 2: So s\u00e1nh c\u00e1c k\u1ebft qu\u1ea3 \u0111\u00f3 v\u1edbi nhau<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/> $\\underbrace{(-15) . 8}_{-120} $ <span class='basic_hoi_black'>?<\/span> $\\underbrace{11 . (-12)}_{-132} $<br\/> M\u00e0 -120 > -132<br\/>N\u00ean (-15) . 8 > 11 . (-12)<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> ><\/span><\/span> <br\/> ","column":3}]}],"id_ques":1256},{"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":[[["-4"],["-4"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center>-5 . _input_ = 20<br\/>5 . _input_ = -20","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>(+) . (+) $\\rightarrow$ (+)<br\/>(-) . (-) $\\rightarrow$ (+)<br\/>(-) . (+) $\\rightarrow$ (-)<br\/>(+) . (-) $\\rightarrow$ (-)<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>(-5) . (-4) = 20<br\/>5 . (-4) = -20<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0: <span class='basic_pink'> -4; -4<\/span><\/span> <br\/> "}]}],"id_ques":1257},{"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":[[["3"],["-3"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center>-7 . _input_ = -21<br\/>-7 . _input_ = 21","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>(+) . (+) $\\rightarrow$ (+)<br\/>(-) . (-) $\\rightarrow$ (+)<br\/>(-) . (+) $\\rightarrow$ (-)<br\/>(+) . (-) $\\rightarrow$ (-)<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>(-7) . 3 = -21<br\/>(-7) . (-3) = 21<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0: <span class='basic_pink'> 3; -3<\/span><\/span> <br\/> "}]}],"id_ques":1258},{"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":[[["13000"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/4.jpg' \/><\/center> (-4) . 13 . (-250) = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Nh\u00f3m c\u00e1c c\u1eb7p c\u00f3 t\u00edch l\u00e0 s\u1ed1 tr\u00f2n ch\u1ee5c, tr\u00f2n tr\u0103m, tr\u00f2n ngh\u00ecn.... \u0111\u1ec3 t\u00ednh nhanh<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&(-4) . 13 . (-250)\\\\&= 13 . [(-4) . (-250)]\\\\&= 13 . (4 . 250)\\\\&= 13 . 1000\\\\&= 13000\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> 13000<\/span><\/span> <br\/> "}]}],"id_ques":1259},{"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":[[["-3700"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/4.jpg' \/><\/center> (-37) . 84 + 37 . (-16) = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>a . b + a . c = a . (b + c)<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&(-37) . 84 + 37 . (-16)\\\\&= 37 . (-84) + 37 . (-16)\\\\&= 37 . [(-84) + (-16)]\\\\&= 37 . (-100)\\\\&= -(37 . 100)\\\\&= -3700\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -3700<\/span><\/span> <br\/> "}]}],"id_ques":1260},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c:<br\/>A = 2x - 3y v\u1edbi x = -3; y = 5","select":["A = 9","A = -9","A = 21","A = -21"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: Thay gi\u00e1 tr\u1ecb c\u1ee7a x, y v\u00e0o bi\u1ec3u th\u1ee9c<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Thay x = -3; y = 5 v\u00e0o bi\u1ec3u th\u1ee9c ta \u0111\u01b0\u1ee3c:<br\/>$\\begin{align*}A&=2. (-3) - 3. 5\\\\&= -(2 . 3) - 15\\\\&= -6 - 15\\\\&= -(6 + 15)\\\\&=-21\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A = -21<\/span><\/span> <br\/>","column":2}]}],"id_ques":1261},{"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\/>A = x . (x + 3) - 5 . x v\u1edbi x = -2","select":["A = 8","A = -8","A = 12","A = -12"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: Thay gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0o bi\u1ec3u th\u1ee9c<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c<br\/><b>L\u01b0u \u00fd:<\/b><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Thay x = -2 v\u00e0o bi\u1ec3u th\u1ee9c ta \u0111\u01b0\u1ee3c:<br\/>$\\begin{align*}A&=(-2) . (-2 + 3) - 5 . (-2)\\\\&= (-2) . (3 - 2) -[-(5 . 2)]\\\\&= (-2) . 1 - (-10)\\\\&= -2 + 10\\\\&=10 - 2\\\\&= 8\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A = 8<\/span><\/span> <br\/>","column":2}]}],"id_ques":1262},{"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":[[["440"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/4.jpg' \/><\/center> (-5) . 11 . $(-2)^3$ = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> (-5) . 11 . $(-2)^3$<br\/>= -(5 . 11) . $(-2)^3$<br\/>= -55 . (-8)<br\/>= 55 . 8<br\/>= 440<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> 440<\/span><\/span> <br\/> <\/span> "}]}],"id_ques":1263},{"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":[[["-32"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/4.jpg' \/><\/center> $(-2)^5$ = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>+ T\u00edch m\u1ed9t s\u1ed1 ch\u1eb5n th\u1eeba s\u1ed1 nguy\u00ean \u00e2m s\u1ebd mang d\u1ea5u ( + )<br\/>+ T\u00edch m\u1ed9t s\u1ed1 l\u1ebb th\u1eeba s\u1ed1 nguy\u00ean \u00e2m s\u1ebd mang d\u1ea5u ( - )<span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $(-2)^5$<br\/>= (-2) . (-2) . (-2) . (-2) . (-2)<br\/>= -(2 . 2 . 2 . 2 . 2)<br\/>= -32<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -32<\/span><\/span> <br\/> <\/span> "}]}],"id_ques":1264},{"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 ph\u00e9p t\u00ednh c\u00f3 k\u1ebft qu\u1ea3 nh\u1ecf h\u01a1n 0","select":["A. (-15) . (-7)","B. (-12) . 5","C. 12 . 3","D. (-8) . (-4)"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> + Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>(-15) . (-7) = 15 . 7 = 105, <b>105 > 0<\/b><br\/>(-12) . 5 = - (12 . 5) = -60, <b>-60 < 0<\/b><br\/>12 . 3 = 36, <b>36 > 0<\/b><br\/>(-8) . (-4) = 8 . 4 = 32, <b> 32 > 0<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> B. (-12) . 5<\/span><\/span> <br\/>","column":2}]}],"id_ques":1265},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" H\u00e3y ch\u1ecdn ph\u00e9p t\u00ednh c\u00f3 k\u1ebft qu\u1ea3 nh\u1ecf h\u01a1n 0","select":["A. (-7) . (-9)","B. (-4) . (-5)","C. 8 . 7","D. (-5) . 4"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> + Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>(-7) . (-9) = 7 . 9 = 63, <b>63 > 0<\/b><br\/>(-4) . (-5) = 4 . 5 = 20, <b>20 > 0<\/b><br\/>8 . 7 = 56, <b>56 > 0<\/b><br\/>(-5) . 4 = - (5 . 4) = -20, <b> -20 < 0<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> D. (-5) . 4<\/span><\/span> <br\/>","column":2}]}],"id_ques":1266},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" T\u00ecm x, bi\u1ebft:<br\/>x . (x - 1) = 0","select":["A. x = 0","B. x = 1","C. x = -1","D. x = 0 ho\u1eb7c x = 1"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>A . B = 0 th\u00ec A = 0 ho\u1eb7c B = 0<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>x . (x - 1) = 0<br\/>$\\Rightarrow$ x = 0 ho\u1eb7c x - 1 = 0<br\/>+)<br\/> $\\begin{align*}x - 1&=0\\\\x&= 0 + 1\\\\x&= 1\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> D. x = 0 ho\u1eb7c x = 1<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":1267},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" T\u00ecm x, bi\u1ebft:<br\/>(x - 2) . (x - 1) = 0","select":["A. x = -2","B. x = -1","C. x = -1 v\u00e0 x = 2","D. x = 1 ho\u1eb7c x = 2"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>A . B = 0 th\u00ec A = 0 ho\u1eb7c B = 0<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>(x - 2) . (x - 1) = 0<br\/>$\\Rightarrow$ x - 2 = 0 ho\u1eb7c x - 1 = 0<br\/>+)<br\/> $\\begin{align*}x - 2&=0\\\\x&= 0 + 2\\\\x&= 2\\end{align*}$<br\/>+)<br\/> $\\begin{align*}x - 1&=0\\\\x&= 0 + 1\\\\x&= 1\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> D. x = 1 ho\u1eb7c x = 2<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":1268},{"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='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center> 2 . (-3) . 9 . 24 = <span class='basic_hoi_black'>?<\/span>","select":["A. 1296","B. -1296","C. -1692","D. 1692"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&2 . (-3) . 9 . 24\\\\&= - (2.3) . 9 . 24\\\\&= -6 . 9 . 24\\\\&=-(6 . 9). 24\\\\&=-54 . 24\\\\&= -(54 . 24)\\\\& = -1296\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> B. -1296<\/span><\/span> <br\/>","column":2}]}],"id_ques":1269},{"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='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai26/lv2/img\/2.jpg' \/><\/center> (-18) . (-6) . 9 . 7 = <span class='basic_hoi_black'>?<\/span>","select":["A. 6804","B. -6804","C. -6904","D. 6904"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean \u00e2m, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang<br\/>+ Mu\u1ed1n nh\u00e2n hai s\u1ed1 nguy\u00ean kh\u00e1c d\u1ea5u, ta nh\u00e2n hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u (-) tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&(-18) . (-6) . 9 . 7\\\\&= 18 . 6 . 9 . 7\\\\&= 108 . 9 . 7\\\\&=972 . 7\\\\&=6804\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A. 6804<\/span><\/span> <br\/>","column":2}]}],"id_ques":1270}],"lesson":{"save":0,"level":2}}