计算:(1)|-2|-9+(13)-1+(-1)2011-(π-3)0(2)xx-y+yy-x(3)(2ab2c-3)-2÷(a-2b)3(4)x-2x2-1÷x+1x2+2x+1.-数学

题目简介

计算:(1)|-2|-9+(13)-1+(-1)2011-(π-3)0(2)xx-y+yy-x(3)(2ab2c-3)-2÷(a-2b)3(4)x-2x2-1÷x+1x2+2x+1.-数学

题目详情

计算:
(1)|-2|-
9
+(
1
3
)-1+(-1)2011-(π-3)0

(2)
x
x-y
+
y
y-x

(3)(2ab2c-3-2÷(a-2b)3
(4)
x-2
x2-1
÷
x+1
x2+2x+1
题型:解答题难度:中档来源:不详

答案

(1)原式=2-3+3-1-1
=0;

(2)原式=class="stub"x-y
x-y

=1;

(3)原式=2-2a-2b-4c6÷(a-6b3)
=class="stub"1
4
a-2+6b-4-3c6
=
a4c6
4b7


(4)原式=class="stub"x-2
(x+1)(x-1)
(x+1)2
x+1

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

更多内容推荐