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下列计算正确的是( ) A.(-a3)2=-a6 B.(a-b)2=a2-b2 ...
下列计算正确的是( )
A.(-a3)2=-a6
B.(a-b)2=a2-b2
C.3a2+2a3=5a5
D.a6÷a3=a3
考点分析:
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