当x=2007,y=2008时,代数式x4-y4/(x2-2xy-y2) /(x2+y2)/(y-x)
问题描述:
当x=2007,y=2008时,代数式x4-y4/(x2-2xy-y2) /(x2+y2)/(y-x)
答
把偶数都提出来!就剩1的加减了笨
当x=2007,y=2008时,代数式x4-y4/(x2-2xy-y2) /(x2+y2)/(y-x)
把偶数都提出来!就剩1的加减了笨