48/x+y +8/x-y=10
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
若x^2+y^2-8x-10y+41=0,求x/y+y/x的值
x^2+y^2-8x+10y+41=0求(x+y)^2013
已知/x/+x+y=10,/y/+x-y=12.求x+y的值
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)
(x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8
已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值?
[(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x=
2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X
-6x-y-7x+6x-2y-10x+8y+x+6x-8y的值