题目内容
计算下列各题:
(1)(-2xy3)4
(2)-a•(-ab)3
(3)x2•x2y2-(x2y)2.
(1)(-2xy3)4
(2)-a•(-ab)3
(3)x2•x2y2-(x2y)2.
(1)原式=16x4y12.
(2)原式=-a×(-a3b3)
=a4b3.
(3)原式=x4y2-x4y2
=0.
(2)原式=-a×(-a3b3)
=a4b3.
(3)原式=x4y2-x4y2
=0.
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