Nguyễn Thị Ngọc Huyền
Giới thiệu về bản thân
welcome to my home !!! :))
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2022-04-22 19:52:24
\(\dfrac{x^2+1}{3x-13}\)<0 ( x khác 13/3)
mà x2+1>0
=> 3x-13 <0
=> x<13/3
2022-03-10 17:36:18
2022-03-07 17:43:03
2022-03-05 07:11:02
2022-03-04 21:57:43
2022-03-04 21:57:43
2022-03-04 21:22:11
2022-03-04 21:22:11