问题 解答题
计算下列各题:
(1)(-2a2b33
(2)(a2•bm3•b2
(3)(
1
4
)8×48

(4)(x2y34+(-2x4y)2y10
答案

(1)(-2a2b33

=(-2)3(a23(b33

=-8a6b9

(2)(a2•bm3•b2

=a6b3m•b2

=a6b3m+2

(3)(

1
4
)8×48

=(

1
4
×4)8

=1;

(4)(x2y34+(-2x4y)2y10

=x8y12+4x8y2y10

=x8y12+4x8y12

=5x8y12

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