问题
选择题
x3y2•(-xy3)2的计算结果是( )
A.x5y10
B.x5y8
C.-x5y8
D.x6y12
答案
x3y2•(-xy3)2,
=x3y2•x2y3×2,
=x3+2y2+6,
=x5y8.
故选B.
x3y2•(-xy3)2的计算结果是( )
A.x5y10
B.x5y8
C.-x5y8
D.x6y12
x3y2•(-xy3)2,
=x3y2•x2y3×2,
=x3+2y2+6,
=x5y8.
故选B.