A.(-1)0=-1 | B.(-1)-1=1 | C.2a-3=
| D.(-a)7÷(-a)3=a4 |
2 |
a3 |
A.2x2•3x3=6x6 | B.(x3)n÷x2n=xn |
C.(a+2b)2=a2+4ab+2b2 | D.(x-3y)2=x2-3xy+9y2 |
A.(a+3)2=a2+9 | B.a10÷a2=a5 | C.a2+a2=2a4 | D.a3•a2=a5 |
A.a5÷a5=0 | B.-(a-b)4÷(b-a)3=a-b |
C.(x3)4÷(-x2)3=-x2 | D.(x2-y2)2=x4-y4 |
1 |
3 |
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