若/y+5/+(x-2)^2=0,求-3(2x-y)-[6x+2y-(10x-8y)]的值
若x^2+y^2-8x-10y+41=0,求x/y+y/x的值
若/y+5/+(x-2)^2=0,求-3(2x-y)-[6x+2y-(10x-8y)]的值
若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
x²-2x+y²+6y+10=0,求—9(x+y)²+(3x-2y)(2y+3x)的值
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
(1)已知x+y=6,x²-y²=5,求x-y的值(2)若x+y=3,x²+y²
已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值
已知x^2+y^2-6x-8y+25=0,求分式y/x - x/y的值
已知x^2+y^2-6x-8y+25=0 求y/x-x/y的值
已知x,y满足x^2+y^2-6x+8y+25=0,求y^x的值