计算(1)4+(-2011)0-(13)-1+|-2|(2)(2aa-1)2÷aa-1-4a-1.-数学

题目简介

计算(1)4+(-2011)0-(13)-1+|-2|(2)(2aa-1)2÷aa-1-4a-1.-数学

题目详情

计算
(1)
4
+(-2011)0-(
1
3
)-1+|-2|
   
(2)(
2a
a-1
)2
÷
a
a-1
-
4
a-1
题型:填空题难度:中档来源:不详

答案

(1)原式=2+1-3+2
=2;

(2)原式=
4a2
(a-1)2
×class="stub"a-1
a
-class="stub"4
a-1

=class="stub"4a
a-1
-class="stub"4
a-1

=class="stub"4a-4
a-1

=4.

更多内容推荐