(1)计算:2-2+|-14|-(π-2013)0;(2)化简:(12-a2a+2)÷aa+1.-数学

题目简介

(1)计算:2-2+|-14|-(π-2013)0;(2)化简:(12-a2a+2)÷aa+1.-数学

题目详情

(1)计算:2-2+|-
1
4
|-(π-2013)0

(2)化简:(
1
2
-
a
2a+2
a
a+1
题型:解答题难度:中档来源:镇江

答案

(1)2-2+|-class="stub"1
4
|-(π-2013)0

=class="stub"1
4
+class="stub"1
4
-1
=-class="stub"1
2



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

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

=class="stub"a+1
2a
-class="stub"1
2

=class="stub"a+1
2a
-class="stub"a
2a

=class="stub"1
2a

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