{"segment":[{"time":24,"part":[{"title":"\u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng ","title_trans":"","temp":"fill_the_blank","correct":[[[">"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/5.jpg' \/><\/center>So s\u00e1nh: $\\sqrt[3]{800}$ _input_$9$ ","hint":"\u0110\u01b0a th\u1eeba s\u1ed1 v\u00e0o c\u0103n b\u1eadc ba r\u1ed3i so s\u00e1nh hai s\u1ed1 trong c\u0103n ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/> $9=\\sqrt[3]{9^3}=\\sqrt[3]{729} <\\sqrt[3]{800}$ <br\/> <span class='basic_pink'>V\u1eady d\u1ea5u c\u1ea7n \u0111i\u1ec1n l\u00e0 $>$<\/span><\/span>"}]}],"id_ques":661},{"time":24,"part":[{"title":"\u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng ","title_trans":"","temp":"fill_the_blank","correct":[[["<"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/5.jpg' \/><\/center>So s\u00e1nh: $2$ _input_ $\\sqrt[3]{9}$","hint":"\u0110\u01b0a th\u1eeba s\u1ed1 v\u00e0o c\u0103n b\u1eadc ba r\u1ed3i so s\u00e1nh hai s\u1ed1 trong c\u0103n ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/> $2=\\sqrt[3]{2^3}=\\sqrt[3]{8} <\\sqrt[3]{9}$ <br\/> <span class='basic_pink'>V\u1eady d\u1ea5u c\u1ea7n \u0111i\u1ec1n l\u00e0 $<$<\/span><\/span>"}]}],"id_ques":662},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["-4a"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"R\u00fat g\u1ecdn bi\u1ec3u th\u1ee9c <br\/>$\\sqrt[3]{-125{{a}^{3}}}+a=$_input_","hint":"\u00c1p d\u1ee5ng: $\\sqrt[3]{{{a}^{3}}}=a$ ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{-125{{a}^{3}}}+a=\\sqrt[3]{-125}.\\sqrt[3]{{{a}^{3}}}+a\\,$$=-5a+a=-4a$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $-4a$<\/span> <\/span>"}]}],"id_ques":663},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["a"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"R\u00fat g\u1ecdn bi\u1ec3u th\u1ee9c sau <br\/> $\\sqrt[3]{64{{a}^{3}}}-3a$=_input_","hint":"$\\sqrt[3]{{{a}^{3}}}=a$ ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{64{{a}^{3}}}-3a=\\sqrt[3]{64}.\\sqrt[3]{{{a}^{3}}}-3a\\,$$=4a-3a=a$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $a$<\/span><\/span> "}]}],"id_ques":664},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00fang hay sai","title_trans":"L\u1ef1a ch\u1ecdn \u0111\u00fang hay sai","temp":"true_false","correct":[["t","t","f"]],"list":[{"point":5,"image":"img\/1.png","col_name":["","\u0110\u00fang","Sai"],"arr_ques":["C\u0103n b\u1eadc ba c\u1ee7a $125$ l\u00e0 $5$ ","$3>\\sqrt[3]{25}$ ","C\u0103n b\u1eadc ba c\u1ee7a $-64$ l\u00e0 $4$ v\u00e0$ -4$"],"hint":"$\\sqrt[3]{{{a}^{3}}}=a$ ","explain":["\u0110\u00fang v\u00ec $\\sqrt[3]{125}=\\sqrt[3]{{{5}^{3}}}=5$","<br\/> \u0110\u00fang v\u00ec $3=\\sqrt[3]{{{3}^{3}}}=\\sqrt[3]{27}>\\sqrt[3]{25}$","<br\/>Sai v\u00ec $\\sqrt[3]{-64}=\\sqrt[3]{{{(-4)}^{3}}}=-4$"]}]}],"id_ques":665},{"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='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/2.jpg' \/><\/center> T\u00ecm $x$ \u0111\u1ec3 $\\sqrt[3]{x}\\le \\dfrac{2}{3}$. ","select":["A. $x\\le\\dfrac{4}{9}$ ","B. $x\\le\\dfrac{4}{27}$","C. $x\\le\\dfrac{8}{27}$"],"hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{x}\\le\\dfrac{2}{3}\\Leftrightarrow x\\le{{\\left( \\dfrac{2}{3} \\right)}^{3}}\\Leftrightarrow x\\le\\dfrac{8}{27}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C<\/span>","column":3}]}],"id_ques":666},{"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/lop9/toan/daiso/bai6/lv1/img\/1.png' \/><\/center> T\u00ecm $x$ \u0111\u1ec3 $\\sqrt[3]{x}\\ge -\\dfrac{1}{3}$. ","select":["A. $x\\ge-\\dfrac{1}{27}$ ","B. $x\\ge\\dfrac{1}{27}$","C. $x\\ge-\\dfrac{1}{9}$"],"hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{x}\\ge -\\dfrac{1}{3}\\Leftrightarrow x\\ge{{\\left( -\\dfrac{1}{3} \\right)}^{3}}\\,\\,$$\\Leftrightarrow x\\ge-\\dfrac{1}{27}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A<\/span>","column":3}]}],"id_ques":667},{"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/lop9/toan/daiso/bai6/lv1/img\/4.jpg' \/><\/center> Gi\u00e1 tr\u1ecb c\u1ee7a $x$ sao cho $\\sqrt[3]{x}=\\dfrac{1}{2}$ l\u00e0: ","select":["A. $\\dfrac{1}{4}$ ","B. $\\dfrac{1}{8}$","C. $\\dfrac{1}{16}$"],"hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{x}=\\dfrac{1}{2}\\Leftrightarrow x={{\\left( \\dfrac{1}{2} \\right)}^{3}}\\Leftrightarrow x=\\dfrac{1}{8}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B<\/span>","column":3}]}],"id_ques":668},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank_random","correct":[[["114"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh $ \\sqrt[3]{3x+1}=7$<br\/>T\u1eadp nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh l\u00e0 $S=${_input_}","hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<br\/><\/span>B\u01b0\u1edbc 1: L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf<br\/>B\u01b0\u1edbc 2: Bi\u1ebfn \u0111\u1ed5i v\u00e0 gi\u1ea3i ti\u1ebfp ph\u01b0\u01a1ng tr\u00ecnh. <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align} & \\sqrt[3]{3x+1}\\,\\,\\,=7\\\\&\\Leftrightarrow 3x+1={{\\left( 7 \\right)}^{3}} \\\\ & \\Leftrightarrow 3x+1=343 \\\\ & \\Leftrightarrow 3x=342 \\\\ & \\Leftrightarrow x=114 \\\\ \\end{align}$ <br\/>T\u1eadp nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh l\u00e0 $S=\\{114\\}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $114$<\/span><\/span><\/span>"}]}],"id_ques":669},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["64"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh $\\sqrt[3]{3-2x}=-5$<br\/>T\u1eadp nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh l\u00e0 $S=${_input_}","hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<br\/><\/span>B\u01b0\u1edbc 1: L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf<br\/>B\u01b0\u1edbc 2: Bi\u1ebfn \u0111\u1ed5i v\u00e0 gi\u1ea3i ti\u1ebfp ph\u01b0\u01a1ng tr\u00ecnh. <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align} & \\sqrt[3]{3-2x}\\,\\,\\,=-5\\\\&\\Leftrightarrow 3-2x={{\\left( -5 \\right)}^{3}} \\\\ & \\Leftrightarrow 3-2x=-125 \\\\ & \\Leftrightarrow 2x=128 \\\\ & \\Leftrightarrow x=64 \\\\ \\end{align}$ <br\/>T\u1eadp nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh l\u00e0 $S=\\{64\\}$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $64$<\/span><\/span><\/span> "}]}],"id_ques":670},{"time":24,"part":[{"title":"Kh\u1eb3ng \u0111\u1ecbnh sau \u0110\u00fang hay Sai","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/4.jpg' \/><\/center>V\u1edbi $b\\ne 0$ ta c\u00f3: $\\sqrt[3]{\\dfrac{a}{b}}=\\dfrac{\\sqrt[3]{a}}{\\sqrt[3]{b}}$ ","select":["A. \u0110\u00fang ","B. Sai"],"hint":"","explain":"<span class='basic_left'>V\u1edbi $a,b\\in \\mathbb R,\\, b\\ne 0$ Ta lu\u00f4n c\u00f3:<br\/>$\\sqrt[3]{\\dfrac{a}{b}}=\\dfrac{\\sqrt[3]{a}}{\\sqrt[3]{b}}$<br\/>V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 \u0110\u00fang<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A<\/span>","column":2}]}],"id_ques":671},{"time":24,"part":[{"title":"Kh\u1eb3ng \u0111\u1ecbnh sau \u0110\u00fang hay Sai","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/1.png' \/><\/center>C\u0103n b\u1eadc ba c\u1ee7a s\u1ed1 \u00e2m l\u00e0 m\u1ed9t s\u1ed1 \u00e2m. ","select":["A. \u0110\u00fang ","B. Sai"],"hint":"","explain":"<span class='basic_left'>C\u0103n b\u1eadc ba c\u1ee7a s\u1ed1 \u00e2m l\u00e0 s\u1ed1 \u00e2m<br\/>Kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 \u0110\u00fang <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A<\/span>","column":2}]}],"id_ques":672},{"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":"M\u1ed9t nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh $\\sqrt[3]{x+1}=3$ l\u00e0: ","select":["A. $x=2$ ","B. $x=8$","C. $x=26$ ","D. $x=28$"],"hint":"L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<br\/><\/span>B\u01b0\u1edbc 1: L\u1eadp ph\u01b0\u01a1ng hai v\u1ebf<br\/>B\u01b0\u1edbc 2: Bi\u1ebfn \u0111\u1ed5i v\u00e0 gi\u1ea3i ti\u1ebfp ph\u01b0\u01a1ng tr\u00ecnh. <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<br\/><\/span>$\\begin{align} &\\sqrt[3]{x+1}=3\\\\ &\\Leftrightarrow x+1={{3}^{3}} \\\\ & \\Leftrightarrow x+1=27 \\\\ & \\Leftrightarrow x=26 \\\\ \\end{align}$ <br\/>V\u1eady ph\u01b0\u01a1ng tr\u00ecnh c\u00f3 m\u1ed9t nghi\u1ec7m l\u00e0 $x=26$. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C<\/span><\/span>","column":2}]}],"id_ques":673},{"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":"K\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p t\u00ednh $\\sqrt[3]{-27}.\\sqrt[3]{64}$ l\u00e0: ","select":["A. $-12$ ","B. $-24$","C. $-36$ ","D. $-72$"],"hint":"$\\sqrt[3]{{{a}^{3}}}=a$ ","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{-27}.\\sqrt[3]{64}=\\sqrt[3]{{{\\left( -3 \\right)}^{3}}}.\\sqrt[3]{{{4}^{3}}}\\,\\,$$=\\left( -3 \\right).4=-12$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A<\/span>","column":2}]}],"id_ques":674},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["7"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c<br\/> $\\sqrt[3]{512}+\\sqrt[3]{-1}=$_input_","hint":"","explain":"<span class='basic_left'>Ta c\u00f3;<br\/>$\\sqrt[3]{512}+\\sqrt[3]{-1}=\\sqrt[3]{{{8}^{3}}}+\\sqrt[3]{{{\\left( -1 \\right)}^{3}}}\\,\\,$$=8-1=7$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $7$<\/span> <\/span>"}]}],"id_ques":675},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["6"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c<br\/> $\\sqrt[3]{64}-\\sqrt[3]{27}+\\sqrt[3]{125}=$_input_","hint":"","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\begin{align} &\\sqrt[3]{64}-\\sqrt[3]{27}+\\sqrt[3]{125}\\\\&=\\sqrt[3]{{{4}^{3}}}-\\sqrt[3]{{{3}^{3}}}+\\sqrt[3]{{{5}^{3}}} \\\\ & =4-3+5\\\\&=6 \\\\ \\end{align}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $6$<\/span><\/span>"}]}],"id_ques":676},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["-125"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/1.png' \/><\/center> $\\sqrt[3]{{\\FormInput[40][bl_elm_true basic_elm basic_blank basic_blank_part]{}}}=-5$","hint":"","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$-5=\\sqrt[3]{{{\\left( -5 \\right)}^{3}}}=\\sqrt[3]{-125}$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $-125$<\/span><\/span> "}]}],"id_ques":677},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["8"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/2.png' \/><\/center> $\\sqrt[3]{{\\FormInput[40][bl_elm_true basic_elm basic_blank basic_blank_part]{}}}=2$","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$2=\\sqrt[3]{{{2}^{3}}}=\\sqrt[3]{8}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $ 8 $<\/span><\/span>"}]}],"id_ques":678},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["-4"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/9.jpg' \/><\/center> T\u00ednh: $\\,\\,\\,\\,\\sqrt[3]{-64} =$ _input_","hint":"$\\sqrt[3]{{{a}^{3}}}=a$","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{-64}=\\sqrt[3]{(-4)^3}=-4$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $-4$ <\/span><\/span>"}]}],"id_ques":679},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["3"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","type_check":"","ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/toan/daiso/bai6/lv1/img\/4.jpg' \/><\/center> T\u00ednh: $\\,\\,\\,\\,\\sqrt[3]{27} =$ _input_","hint":"$\\sqrt[3]{{{a}^{3}}}=a$","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\sqrt[3]{27}=\\sqrt[3]{3^3}=3$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $3 $<\/span><\/span>"}]}],"id_ques":680}],"lesson":{"save":0,"level":1}}