x y满足(X+Y)^99=-1 (X-Y)^100=1 求X^101+Y^101的值
已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值
已知x,y满足y^4+2x^4+1=4x^2y,求x,y的值
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
已知实数x,y满足方程x*x+y*y-4x+1=0.求y-x的最大值
x>1,y>0,且满足xy=x^y,x/y=x^3y,求x+y
已知x、y满足二分之一,|x-y|+|1-y|=0,求7x-3y的值
已知:x,y满足|2x-y|+|y-1/2|=0,求7x-3y的值.
若x-y=1,求代数式x(x-y)+y(y-x)+2013的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
当x=1/2,y=1/3时,求代数式x-(x+y)+(x+2y)-(x+3y)+…-(x+101y)的值
实数X、y满足y=根号2-X+根号X-2+1,求X^2-y^2008的值
已知实数x,y满足(x+y)平方=1,(x-y)平方=25,求x,y得值