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A.(a+b)2=a2+b2 | B.(﹣1+x)(﹣x﹣1)=1﹣x2 |
C.a4•a2=a8 | D.(﹣2x)3=﹣6x3 |
A.(-x+y)(x+y) | B.(-x+y)(x-y) |
C.(x+2)(2+x) | D.(2x+3)(3x-2) |
A.2a+3a=5a2 | B.(a+2b)2=a2+4b2 |
C.a2•a3=a6 | D.(﹣ab2)3=﹣a3b6 |
A.a2•a3=a5 | B.(m2)3=m5 |
C.(x+y)2=x2+y2 | D.2a2+2b2=4a2b2 |
A.-22022 | B.22022 |
C. | D.− |
gxyz515
2021-03-20 16:25
初中数学 | 选择题
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