A.(-2)×4 | B.(-2)×(-2)×(-2)×(-2) |
C.-4×4 | D.(-2)+(-2)+(-2)+(-2) |
A.(x3)2=x5 | B.x2+x2=2x4 | C.(-2)-1=-
| D.(a-b)2=a2-b2 |
A.a3+a2=a5 | B.(3a-b)2=9a2-b2 |
C.(-ab3)2=a2b6 | D.a6b÷a2=a3b |
a-b |
a |
2ab-b2 |
a |
3 |
A.-22=-4 | B.-(-2)2=4 | C.(-3)2=6 | D.(-1)3=-3 |
1 |
2 |
1 |
2 |
A.30° | B.45° | C.60° | D.90° |
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