(1)化简1x÷1x2+x;(2)计算:2-(π-1)0-2×(12)+(14)-1-数学

题目简介

(1)化简1x÷1x2+x;(2)计算:2-(π-1)0-2×(12)+(14)-1-数学

题目详情

(1)化简
1
x
÷
1
x2+x

(2)计算:
2
-(π-1)0-2×(
1
2
)+(
1
4
)-1
题型:解答题难度:中档来源:不详

答案

(1)class="stub"1
x
÷class="stub"1
x2+x
=
x2+x
x
=x+1;
(2)原式=
2
-1-2×
2
2
+4
=3.

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