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> 9的算术平方根等于()A.±3B.-3C.3D.81-八年级数学
9的算术平方根等于()A.±3B.-3C.3D.81-八年级数学
题目简介
9的算术平方根等于()A.±3B.-3C.3D.81-八年级数学
题目详情
9的算术平方根等于( )
A.±3
B.-3
C.3
D.81
题型:单选题
难度:中档
来源:不详
答案
C
分析:首先根据算术平方根的定义求出
,然后再求出它的算术平方根即可解决问题.
解答:解:∵
=3,
而9的算术平方根即3,
∴9的算术平方根是3.
故选C.
上一篇 :
Since you have made so littl
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在二次根式:①;②;③;④中,与是同类
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题目简介
9的算术平方根等于()A.±3B.-3C.3D.81-八年级数学
题目详情
答案
解答:解:∵
而9的算术平方根即3,
∴9的算术平方根是3.
故选C.