{"save":1,"level":1,"time":"90","total":34,"point":5,"segment":[{"id":"4031","test_id":"495","question":"<p>Trong kh&ocirc;ng gian Oxyz , cho m\u1eb7t ph\u1eb3ng&nbsp;<span class=\"math-tex\">$(P): 2x-y+3z-4=0$<\/span>.&nbsp;M\u1ed9t vect\u01a1 ph&aacute;p tuy\u1ebfn c\u1ee7a m\u1eb7t ph\u1eb3ng ( P) c&oacute; t\u1ecda \u0111\u1ed9 l&agrave;<\/p>","options":["A. (3;-1;2)","B. (2;-1;3)","C. ( -1;2;3)","D. (2;1;3)"],"correct":"2","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave; :&nbsp;<span style=\"color:#27ae60;\"><strong>B. (2;-1;3)<\/strong><\/span><\/p><p>M\u1eb7t ph\u1eb3ng&nbsp;<span class=\"math-tex\">$(P): 2x-y+3z-4=0$<\/span>&nbsp;c&oacute; 1 VTPT l&agrave;&nbsp;(2;&ndash;1;3).<\/p>","type":"choose","user_id":"156","test":"1","date":"2025-05-20 15:40:34"},{"id":"4032","test_id":"495","question":"<p>Ti\u1ec7m c\u1eadn \u0111\u1ee9ng c\u1ee7a \u0111\u1ed3 th\u1ecb h&agrave;m s\u1ed1&nbsp;<span class=\"math-tex\">$y= \\frac{2x-1}{x+2}$<\/span>&nbsp;l&agrave; \u0111\u01b0\u1eddng th\u1eb3ng c&oacute; ph\u01b0\u01a1ng tr&igrave;nh :<\/p>","options":["A.&nbsp;<span class=\"math-tex\">$ x= \\frac{1}{2}$<\/span>","B.&nbsp;y = 2","C. x = - 2","D. y = - 2"],"correct":"3","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave; :&nbsp;<span style=\"color:#27ae60;\"><strong>C. x = - 2<\/strong><\/span><\/p><p><strong><span class=\"math-tex\">$y= \\frac{2x-1}{x+2}$<\/span><\/strong>&nbsp;c&oacute; ti\u1ec7m c\u1eadn \u0111\u1ee9ng l&agrave; x = - 2.<\/p>","type":"choose","user_id":"156","test":"1","date":"2025-05-20 15:43:49"}]}