若x^2+y^2+2x-8y=-17,求y/x的值

若x^2+y^2+2x-8y=-17,求y/x的值 若x^2+y^2+2x-8y=-17,求y/x的值. 若x*x+y*y=x+y-1/2,求x,y的值如题 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 x'2+2x+y'2-8y+17=0,求x'y的值 x^2+2x+y^2-8y+17=0,求x^y x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值 已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=? x+2x+y-8y+17=0,求x∧y 若x,y为正数,且2*x+8*y-x*y=0,求x+y的最小值 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 已知x+y/y=11/8,求x-y/x+2y的值. 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 若x²+2x+y²-8y+17=0 求x 的y次方的值~若x²+2x+y²-8y+17=0 求x 的y次方的值~ 若x^2+2x+y^2-8y+17=0,求x^y的值 若(x+y)-2xy+2x-8y+17=0,求x的y次方 若x²+y²+2x-8y+17=0 求（-2x）^y的值