(1)计算:|-2|-116+(-2)-2-(-3)0.(2)计算:(1+1x-1)÷xx2-1.-数学

题目简介

(1)计算:|-2|-116+(-2)-2-(-3)0.(2)计算:(1+1x-1)÷xx2-1.-数学

题目详情

(1)计算:|-2|-
1
16
+(-2)-2-(-
3
)0
. 
(2)计算:(1+
1
x-1
)÷
x
x2-1
题型:解答题难度:中档来源:徐州模拟

答案

1)原式=2-class="stub"1
4
+class="stub"1
4
-1=2-1=1;      

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

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