若(x+1)^2+4|y-6|=0,则5x+6y+4x-8y的值是
若4x-5y=0,则x+y分之x-y的值是
若(x+1)^2+4|y-6|=0,则5x+6y+4x-8y的值是
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若实数X,Y满足X²+Y²+4X-2Y +1=0,则X²-6X+Y²-2Y的最大
若实数x,y满足x^2+y^2-6x-4y+12=0,则x^2+y^2的取值范围是
已知实数x,y满足x^2+y^2-6x-8y+24=0,则3x+4y-10的取值范围是
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
若|3x+2y-4|与6(5x+7y-3)的平方互为相反数,则x y的值是 A X=1 Y=1 B x=2 y=-1 C
已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
若根号x+y-1+(y+4=0,则x-y的值是
x^2+y^2-4x-6y+13=0,求(2/3根号9x+y^2根号x/y^3)-x^2根号1/x-5x根号y/x)的值