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If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
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分解因式：3150：5 7 3 3 5 2
所以7 和2是丹的 要想是平方那就必须是：7*2=14
默默
3150乘以一个数就称为一个因子的平方
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2018-05-12 02:33:10
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