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下列计算正确的是( ) A.a6÷a2=a3 B.a+a4=a5 C.(ab3)...
下列计算正确的是( )
A.a6÷a2=a3
B.a+a4=a5
C.(ab3)2=a2b6
D.a-(3b-a)=-3b
考点分析:
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