以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/

以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/ 以知x-*x*y*y-2x-6y=-10 x的2011次方y*y的值为?/ x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 x,y 满足x(x-2)-y(y-6)=-10,求x,y的值 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 以知X +Y=10,X^3+Y^3=400 ,则X^2+Y^2= 以知x,y满足1/2[x-y]+[1-y]=0,求7x-3y的值 若x-2y=5,则式子12-x+2y=.以知3x-4y=2x+y则x∶y= 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 以知X+Y=4,X*2+Y*2=10,求X*3+Y*3,X*4+Y*4的值 (x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5 {6/x+y+10/x-y=30 6/x+y-10/x-y=-1 6x^2(x-y)-10y(y-x)^2-2(y-x) 因式分解 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 （x+y）/2- x-y/2=6 3(x+y)=4(x-y) x+y/3+x-y/2=6 4(x+y)-2(x-y)=40 [(2x-y)(2x+y)+y(y-6x)]÷2x=? 2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51