{"common":{"save":0,"post_id":"6606","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6512","post_id":"6606","mon_id":"1158921","chapter_id":"1158930","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a&nbsp;ph&eacute;p nh&acirc;n&nbsp;<span class=\"math-tex\">$\\dfrac{3y}{x-y} \\space . \\space \\dfrac{4x-4y}{3xy}$<\/span> l&agrave;:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{x} $<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{x-y} $<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{4x} $<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{3x-y} $<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p>Ta c&oacute;:&nbsp;<span class=\"math-tex\">$\\dfrac{3y}{x-y} \\space . \\space \\dfrac{4x-4y}{3xy}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{3y}{x-y} \\space . \\space \\dfrac{4(x-y)}{3xy}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{3y.4(x-y)}{(x-y).3xy} $<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{4}{x} $<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{4}{x} $<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-27 00:34:22","option_type":"math","len":0},{"id":"6515","post_id":"6606","mon_id":"1158921","chapter_id":"1158930","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a&nbsp;ph&eacute;p chia&nbsp;<span class=\"math-tex\">$\\dfrac{15x^2y}{8+x}\\space : \\space \\dfrac{3xy^2}{8+x}$<\/span>&nbsp;l&agrave;:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{5y}{x}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{3y}{x+8}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{5x}{y}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{5x}{x+8}$<\/span>"],"correct":"3","level":"1","hint":"","answer":"<p>Ta c&oacute;:&nbsp;<span class=\"math-tex\">$\\dfrac{15x^2y}{8+x}\\space : \\space \\dfrac{3xy^2}{8+x}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{15x^2y}{8+x}\\space . \\space \\dfrac{8+x}{3xy^2}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{15x^2y.(8+x)}{(8+x).3xy^2}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{5x}{y}$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{5x}{y}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-27 00:41:52","option_type":"math","len":0},{"id":"6516","post_id":"6606","mon_id":"1158921","chapter_id":"1158930","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a&nbsp;ph&eacute;p nh&acirc;n&nbsp;<span class=\"math-tex\">$\\dfrac{4x^2}{3+x}\\space . \\space \\dfrac{9-x^2}{6xy}$<\/span>&nbsp;l&agrave;:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{2x(3+x)}{y}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{3x}{2(3-x)}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{x}{y(3+x)}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{2x(3-x)}{3y}$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p>Ta c&oacute;:&nbsp;<span class=\"math-tex\">$\\dfrac{4x^2}{3+x}\\space . \\space \\dfrac{9-x^2}{6xy}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{4x^2}{3+x}\\space . \\space \\dfrac{(3-x)(3+x)}{6xy}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{4x^2.(3-x)(3+x)}{(3+x)6xy}$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{2x(3-x)}{3y}$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{2x(3-x)}{3y}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-27 00:42:24","option_type":"math","len":0}]}