若(x^+y^)(x^+y^-1)=6,则x^+y^的值为

若(-x+6):(x-y):(4x+y)=3:14:1,求x+y 若(-x+6):(x-y):(4x+y)=3:14:1,求x+y 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³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 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 {6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1 若x-y=1,求代数式x(x-y)+y(y-x)+2013的值 若x*x+y*y=x+y-1/2,求x,y的值如题 若（x+y)(1-x-y)+6=0,则x+y的值是_____ 若(x^+y^)(x^+y^-1)=6,则x^+y^的值为 若（X+Y)(1-X-Y)=-6,则X+Y的值是多少 若（x+y）(x+y-1)=6,求x+y的值 若x+y=-6,求[(x+y)的2次方-(x-y)的2次方+2y(y-x)]乘以1分之4y 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7