ChaseDream
标题:
数学JJ
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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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