A.2a2+a=3a3 | B.2a-1=
| C.(-a)3×a2=-a6 | D.(-a)2÷(-a2)=-1 |
2 |
a |
A.a2×a3=a6 | B.a2+a3=a5 | C.a3-a2=a | D.a3÷a2=a |
A.(1),(2) | B.(2),(4) | C.(2),(3) | D.(2),(3),(4) |
A.x4+x2=x6 | B.
| C.2+
| D.x6÷x2=x4 |
A.(-x2)3=-x5 | B.x8÷x4=x2 | C.x3+x3=2x3 | D.(xy)3=xy3 |
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