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标题: 数学JJ [打印本页]

作者: xiaoxiaowang23    时间: 2018-10-7 21:37
标题: 数学JJ
Q50
ds:X,Y为<0的正整数,问x=y?
条件一:x^4=y^4
条件二:2x^4-y^4=x^4
选了D








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