A.x5-x3=x2 | B.x4(x3)2=x10 |
C.(-x)12÷(-x)3=x9 | D.(-2x)2x-3=8 |
4 |
x |
A.(2a2)3=6a6 | B.a3÷a-1=a4 |
C.2a2+4a2=6a4 | D.(a+2b)2=a2+4b2 |
A.x-(y-1)=x-y-1 | B.2(2-y)=4-y | ||
C.(-m)7÷(-m)2=m5 | D.a-4=
|
A.2-2=-4 | B.(
| C.(33)2=35 | D.x8÷x4=x2 |
A.-1 | B.1 | C.0 | D.无法确定 |
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