(1)计算:(-a2bcd3)3÷2ad3•(-c2a)2;(2)aa-1÷a2-aa2-1-1a-1.-数学

题目简介

(1)计算:(-a2bcd3)3÷2ad3•(-c2a)2;(2)aa-1÷a2-aa2-1-1a-1.-数学

题目详情

(1)计算:(-
a2b
cd3
3÷
2a 
d3
•(-
c
2a
2
(2)
a
a-1
÷
a2-a
a2-1
-
1
a-1
题型:解答题难度:中档来源:不详

答案

(1)原式=-
a6b3
c3d9
d3
2a
c2
4a2
=-
a3b3
cd3


(2)原式=class="stub"a
a-1
(a+1)(a-1)
a(a-1)
-class="stub"1
a-1

=class="stub"a+1
a-1
-class="stub"1
a-1

=class="stub"a
a-1

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