(每小题7分,共14分)(1)计算:︱一2 ︱+()-1×(π一)0一+(一1) 2;(2)解方

(每小题7分,共14分)
(1)计算:︱一2 ︱+()-1×(π一)0+(一1) 2
(2)解方程:x—1=

答案

(1)解:原式=2+3×1—3+1                                ……5分
=3.                                        ……7分
(2)解:(x-2) 2-(x2-4)="3                                     " ……3分
-4x=-5
x=;                                  ……5分
经检验,x=是原方程的解.                                 ……7分解析:

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