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(2001•泰州)下列运算正确的是( ) A.a3•a4=a12 B.a5-a3...
(2001•泰州)下列运算正确的是( )
A.a3•a4=a12
B.a5-a3=a2
C.(a2)m=a2m
D.(a+1)=1
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