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2023-11-07 21:28:13
giair cau nao
2023-11-07 21:22:09
III nha bạn
2023-11-07 21:19:33
có đáp án chx để mik giải
2023-11-07 21:17:07
M=(a+b)(a2-ab+b2)+3ab(1-2ab)+6a2b2
M=a2-ab+b2+3ab
M=(a+b)2=1
2023-11-06 20:06:52
ta có:
3x+2/2x-1=3/2+7/2/2x-1=3/2+7/4x-2 để 3x+2⋮2x-1⇔7⋮(4x-2)
⇒()ϵƯ(7){-1;1;7;-7}
4x-2 | x |
1 | 3/4 |
-1 | 1/4 |
7 | 9/4 |
-7 | -5/4 |
kết luận ....