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> 要使式子有意义,a的取值范围是()A.B.C.a≤2D.a≥-九年级数学
要使式子有意义,a的取值范围是()A.B.C.a≤2D.a≥-九年级数学
题目简介
要使式子有意义,a的取值范围是()A.B.C.a≤2D.a≥-九年级数学
题目详情
要使式子
有意义,
a
的取值范围是( )
A.
B.
C.
a
≤2
D.
a
≥
题型:单选题
难度:偏易
来源:不详
答案
D
分析:根据二次根式的性质,被开方数大于或等于0即可求解.
解答:解:根据题意得:a+2≥0,
解得:a≥-2.
故选D.
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下一篇 :
先化简,再求值:,其中a=-1.-九年级
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题目简介
要使式子有意义,a的取值范围是()A.B.C.a≤2D.a≥-九年级数学
题目详情
答案
解答:解:根据题意得:a+2≥0,
解得:a≥-2.
故选D.