{"common":{"save":0,"post_id":"6540","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5827","post_id":"6540","mon_id":"1158921","chapter_id":"1158927","question":"<p>Bi\u1ebft r\u1eb1ng D l&agrave; \u0111\u01a1n th\u1ee9c sao cho&nbsp;<span class=\"math-tex\">$(-2x^3y^4):D=x^2y^2$<\/span>. T&igrave;m th\u01b0\u01a1ng trong ph&eacute;p chia&nbsp;<span class=\"math-tex\">$(6x^5y^4+10x^4y^3-18x^2y^4):D$<\/span>.<\/p>","options":["<b>A.<\/b> <span class=\"math-tex\">$3x^4y^2+5x^3y-9xy^2$<\/span>","<b>B. <span class=\"math-tex\">$-3x^4y^2-5x^3y^3+9xy$<\/span><\/b>","<b>C.<\/b> <span class=\"math-tex\">$3x^4y^2-6x^3y+9x^2y^2$<\/span>","<b>D. <span class=\"math-tex\">$-3x^4y^2-5x^3y+9xy^2$<\/span><\/b>"],"correct":"4","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$(-2x^3y^4):D=x^2y^2$<\/span><\/p><p><span class=\"math-tex\">$D=(-2x^3y^4):(x^2y^2)$<\/span><\/p><p><span class=\"math-tex\">$D=-2xy^2$<\/span><\/p><p>Ta c&oacute;:&nbsp;<span class=\"math-tex\">$(6x^5y^4+10x^4y^3-18x^2y^4):D$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$(6x^5y^4+10x^4y^3-18x^2y^4):(-2xy^2)$<\/span><\/p><p>=&nbsp;<b><span class=\"math-tex\">$-3x^4y^2-5x^3y+9xy^2$<\/span><\/b><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><b>D.&nbsp;<span class=\"math-tex\">$-3x^4y^2-5x^3y+9xy^2$<\/span><\/b><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-02 09:36:48","option_type":"math","len":0},{"id":"5828","post_id":"6540","mon_id":"1158921","chapter_id":"1158927","question":"<p>T&igrave;m s\u1ed1 t\u1ef1 nhi&ecirc;n m \u0111\u1ec3 \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$15x^my^4z$<\/span>&nbsp;chia h\u1ebft cho \u0111\u01a1n th\u1ee9c <span class=\"math-tex\">$3x^4y^m$<\/span>.<\/p>","options":["<b>A. <\/b>m = 4","<b>B. <\/b>m = 3","<b>C. <\/b>m = 2","<b>D. <\/b>m = 5"],"correct":"1","level":"3","hint":"","answer":"<p>\u0110\u1ec3 \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$15x^my^4z$<\/span>&nbsp;chia h\u1ebft cho \u0111\u01a1n th\u1ee9c <span class=\"math-tex\">$3x^4y^m$<\/span>&nbsp;th&igrave;&nbsp;s\u1ed1 m\u0169 c\u1ee7a x v&agrave; y trong \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$3x^4y^m$<\/span> kh&ocirc;ng v\u01b0\u1ee3t qu&aacute; s\u1ed1 m\u0169 c\u1ee7a x v&agrave; y&nbsp;trong \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$15x^my^4z$<\/span>.<\/p><p>Suy ra&nbsp;<span class=\"math-tex\">$4\\le m$<\/span>&nbsp;v&agrave;&nbsp;<span class=\"math-tex\">$m\\le4$<\/span>.<\/p><p>V\u1eady m = 4.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><b>A.&nbsp;<\/b>m = 4<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-02 09:45:05","option_type":"txt","len":0},{"id":"5829","post_id":"6540","mon_id":"1158921","chapter_id":"1158927","question":"<p>T&igrave;m s\u1ed1 t\u1ef1 nhi&ecirc;n m \u0111\u1ec3 \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$x^4y^6z$<\/span>&nbsp;chia h\u1ebft cho \u0111\u01a1n th\u1ee9c <span class=\"math-tex\">$-2xy^3z^m$<\/span>.<\/p>","options":["<b>A. <\/b>m = 0","<b>B. <\/b>m = 1","<b>C. <\/b>m = 0 ho\u1eb7c m = 1","<b>D. <\/b>m = 2 ho\u1eb7c m = 1"],"correct":"3","level":"3","hint":"","answer":"<p>\u0110\u1ec3 \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$x^4y^6z$<\/span>&nbsp;chia h\u1ebft cho \u0111\u01a1n th\u1ee9c <span class=\"math-tex\">$-2xy^3z^m$<\/span>&nbsp;th&igrave;&nbsp;s\u1ed1 m\u0169 c\u1ee7a z trong \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$-2xy^3z^m$<\/span> kh&ocirc;ng v\u01b0\u1ee3t qu&aacute; s\u1ed1 m\u0169 c\u1ee7a z trong \u0111\u01a1n th\u1ee9c&nbsp;<span class=\"math-tex\">$x^4y^6z$<\/span>.<\/p><p>Suy ra&nbsp;&nbsp;<span class=\"math-tex\">$m\\le1$<\/span>.<\/p><p>V\u1eady m = 0 ho\u1eb7c m = 1.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><b>C.&nbsp;<\/b>m = 0 ho\u1eb7c m = 1<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-07-02 09:46:05","option_type":"txt","len":2}]}