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> 下列计算正确的是()A.2-1=-2B.a0=1C.|1-2|=1-2D.-(3)2=-3-数学
下列计算正确的是()A.2-1=-2B.a0=1C.|1-2|=1-2D.-(3)2=-3-数学
题目简介
下列计算正确的是()A.2-1=-2B.a0=1C.|1-2|=1-2D.-(3)2=-3-数学
题目详情
下列计算正确的是( )
A.2
-1
=-2
B.a
0
=1
C.
|1-
2
|=1-
2
D.
-(
3
)
2
=-3
题型:单选题
难度:中档
来源:不详
答案
A、2-1=
class="stub"1
2
,故选项错误;
B、a0=1(a≠0)缺少必要的条件,故选项错误;
C、
.
1-
2
.
=
2
-1,故选项错误;
D、-(
3
)2=-3,故选项正确.
故选D.
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题目简介
下列计算正确的是()A.2-1=-2B.a0=1C.|1-2|=1-2D.-(3)2=-3-数学
题目详情
答案
B、a0=1(a≠0)缺少必要的条件,故选项错误;
C、
D、-(
故选D.