题目内容
=(÷)·(x3÷x2)·(y2÷y)
=xy;
计算x3y2·(-xy3)2的结果是
A.x5y10
B.x5y8
C.-x5y8
D.x6y12
计算x3y2•(-xy3)2的结果是( )
A. x5y10 B.x5y8 C.-x5y8 D.x6y12