若x∧2-y∧2=24,x+y=6,x+2y=?

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 若x∧2-y∧2=24,x+y=6,x+2y=? x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 若x-y=6,x^2-y^2=24,则x+y=? 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 若f(x+y,y/x)=x^2-y^2,则F(X,Y)= （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 {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 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20