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> 下列各式中,正确的是A.B.C.D.-八年级数学
下列各式中,正确的是A.B.C.D.-八年级数学
题目简介
下列各式中,正确的是A.B.C.D.-八年级数学
题目详情
下列各式中,正确的是
A.
B.
C.
D.
题型:单选题
难度:中档
来源:不详
答案
B
分析:算术平方根的定义:一个非负数的正的平方根,即为这个数的算术平方根,由此即可求出结果.
解答:解:A、
=|-3|=3;故本选项错误;
B、
=-|3|=-3;故本选项正确;
C、
=|±3|=3;故本选项错误;
D、
=|3|=3;故本选项错误.
故选B.
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题目简介
下列各式中,正确的是A.B.C.D.-八年级数学
题目详情
答案
解答:解:A、
B、
C、
D、
故选B.