已知X等于根号三加根号二,Y等于根号三减根号二,求2x^2-xy-y^2
已知X等于根号三加根号二,Y等于根号三减根号二,求2x^2-xy-y^2
数学人气:641 ℃时间:2020-03-22 17:39:43
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