A.
| B.-33×32+23×22=0 | ||||||||||
C.(xy)-1•(
| D.
|
3 |
3 |
3 |
1 |
2 |
1 |
xy |
1 |
4 |
1 |
4 |
a+b |
2 |
4ab |
a2-b2 |
a+b |
2 |
4ab |
(a+b)(a-b) |
2ab |
a-b |
A.(ab)2=ab2 | B.a2•a3=a4 | C.a5+a5=2a5 | D.(a2)3=a5 |
A.1 | B.2 | C.3 | D.4 |
A.(x-y)4 | B.(y-x)4 | C.-(x-y)4 | D.(x+y)4 |
A.-b2•b3=-b6 | B.(a•b3)2=a2b6 |
C.[(-1)2]5=-1 | D.(x-y)2•(x-y)3=(x-y)6 |
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