Đề KT-ĐS8 thường xuyên 1 - Word
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1.1.2.13 4.5 6.7.8. 9•10-1 11.12.13 14.15-1- 16- 17. 18 20
ZNB-COA> Chọn câu sai.
> (x + 2) = x+ 4x +4
> (x - 1)2 = x - 2x +1
<> y? - 32 = (y + 3)y ...
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