通分;(1)4a5b2c,5b-2ac2;(2)x-1x2-2x+1,11-x.-数学

题目简介

通分;(1)4a5b2c,5b-2ac2;(2)x-1x2-2x+1,11-x.-数学

题目详情

通分;
(1)
4a
5b2c
5b
-2ac2

(2)
x-1
x2-2x+1
1
1-x
题型:解答题难度:中档来源:不详

答案

(1)class="stub"4a
5b2c
=
8a2c
10ab2c2
class="stub"5b
-2ac2
=-
25b3
10ab2c2

(2)class="stub"x-1
x2-2x+1
=class="stub"x-1
(x-1)2
=class="stub"1
x-1
class="stub"1
1-x
=-class="stub"1
x-1

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