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正整数a乘以1080得到一个完全平方数,问a的最小值是:

单选题
2022-01-02 06:57
A、30
B、60
C、15
D、10
查看答案

正确答案
A

试题解析
1080因式分解可得6x6x30,代入选项,只有30代入后符合题意。故正确答案为A。

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