计算:3-x2x-4÷(x+2-5x-2)=______.-数学

题目简介

计算:3-x2x-4÷(x+2-5x-2)=______.-数学

题目详情

计算:
3-x
2x-4
÷(x+2-
5
x-2
)
=______.
题型:填空题难度:中档来源:不详

答案

class="stub"3-x
2x-4
÷(x+2-class="stub"5
x-2
)
=
-(x-3)
2(x-2)
÷
x2-4-5
x-2

=
-(x-3)
2(x-2)
•class="stub"x-2
(x+3)(x-3)

=-class="stub"1
2x+6

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