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Khoaicubla
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2024-04-25 22:33:47
thời gian trôi nhanh nhỉ :)
2024-04-25 22:31:36
2024-04-25 22:29:08
đã 4 năm trôi qua và ... tui ko bt
2023-12-31 11:16:34
you don't need tell your sister about our plan.
có sai thì cho mình xl nha
2023-12-17 22:23:47
2+(81-x)=-34
=>81-x=-34-2
=>81-x=-36
=>x=81-(-36)
=>x=117
Vậy x=117
(-12)x=60
=>x=60:(-12)
=>x=-5
Vậy x=-5
12:(x-1)^2=3
=>(x-1)^2=12:3
=>(x-1)^2=4
=>x-1=2 hoặc x-1=-2
Với x-1=2=>x=3
Với x-1=-2=>x=-1
Vậy x=3 hoặc x=-1
2023-12-17 22:13:18
căn 25/4-căn 49/16=căn(5/2)mũ 2-căn(7/4)mũ 2=5/2-7/4=3/4
2023-09-03 08:34:18
(x^2+2)^2= x^4++4x^2+4