{"save":1,"level":1,"time":"90","total":34,"point":5,"segment":[{"id":"3737","test_id":"487","question":"<p>Trong kh&ocirc;ng gian Oxyz, cho ph\u01b0\u01a1ng tr&igrave;nh m\u1eb7t c\u1ea7u&nbsp;<span class=\"math-tex\">$(S): x^2+y^2+z^2-4x-2y+2z-1=0$<\/span>. T&igrave;m to\u1ea1 \u0111\u1ed9 t&acirc;m I c\u1ee7a (S)<\/p>","options":["A. I (2;1;-1)","B. I ( -4;-3;2)","C. I (2;1;1)","D. I (-2;-1;-1)"],"correct":"1","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng : <span style=\"color:#27ae60;\"><strong>A.&nbsp;I (2;1;-1)<\/strong><\/span><\/p>","type":"choose","user_id":"156","test":"1","date":"2025-05-07 15:42:32"},{"id":"3739","test_id":"487","question":"<p>Nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr&igrave;nh&nbsp;<span class=\"math-tex\">$3^x=5$<\/span>&nbsp;l&agrave;&nbsp;<\/p>","options":["A. x = 3","B. x =&nbsp;<span class=\"math-tex\">$log_35$<\/span>","C. x = 5","D. x =&nbsp;<span class=\"math-tex\">$log_53$<\/span>"],"correct":"2","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng : <span style=\"color:#27ae60;\"><strong>B. x =&nbsp;<span class=\"math-tex\">$log_35$<\/span><\/strong><\/span><\/p>","type":"choose","user_id":"156","test":"1","date":"2025-05-07 15:47:06"}]}