化简:(a-1a2-4a+4-a+2a2-2a)÷(4a-1)=______.-数学

题目简介

化简:(a-1a2-4a+4-a+2a2-2a)÷(4a-1)=______.-数学

题目详情

化简:(
a-1
a2-4a+4
-
a+2
a2-2a
)÷(
4
a
-1)
=______.
题型:填空题难度:中档来源:包头

答案

(class="stub"a-1
a2-4a+4
-class="stub"a+2
a2-2a
)÷(class="stub"4
a
-1)

=[class="stub"a-1
(a-2)2
-class="stub"a+2
a(a-2)
class="stub"4-a
a

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

=class="stub"4-a
a(a-2)2
class="stub"a
4-a

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

故答案为:class="stub"1
(a-2)2

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