若4^x+y*5^2(x+y)=10^36,求6x+6y的值
已知:4x^2+y^2-4x-6y+10=0,求y/x-x/y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^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
若X-2Y+6+(X+Y+12)²=0,求4X+ 5Y的值
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值
X^2+y^2-2x+6y+10=0,求x+y的值
x^2+y^2+4x-6y+13=0,求x^y的值
若实数x y满足,4x^2-y^2-4x+6y+10=0,求x^2+y^2的值
若/y+5/+(x-2)^2=0,求-3(2x-y)-[6x+2y-(10x-8y)]的值
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值