问题 解答题
计算:
(1)(-5ab)3
(2)-(3x2y)2
(3)(-1
1
3
ab2c33
(4)(-xmy3m2
答案

(1)(-5ab)3=(-5)3a3b3=-125a3b3

(2)-(3x2y)2=-32x4y2=-9x4y2

(3)(-1

1
3
ab2c33=(-
4
3
ab2c33=(-
4
3
3 a3b6c9=-
64
27
a3b6c9

(4)(-xmy3m2=(-1)2x2my6m=x2my6m

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