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标题: 数学 [打印本页]

作者: kakaka0033    时间: 2018-10-8 22:50
标题: 数学


1.abcz+a^2+z^2+d^2=?

(1) z大于等于240
(2)z+a^2+b^2+c^2+d^2=240

答案:C







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