若x+y=3,xy=-2,求(3x-4y+2xy0-(2x-5x+5xy)的值
若x+y=3,xy=-2,求(3x-4y+2xy0-(2x-5x+5xy)的值
已知X+Y=3,XY=-2,求(3X-4Y+2XY0-(2x-5y+5xy)的值
2(x的平方+xy0-3(xy的平方-xy)-4x的平方y,其中x+y=-|(x-1)的平方|.化简求值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若1/x-1/y=3,求5x+2xy-5y/x-4xy-y的值
已知xy/x+y=2,求代数式3x-5xy+3y/-x+2xy-y的值
已知xy=2(x+y),求(5x-xy+5y)/(3xy-x-y)的值
已知x-y=2xy,求代数式3x-5xy-3y/x+xy-y的值
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
已知x+y=5,xy=2,求5x+4y-3x-2y+xy的值
x+y=8,xy=-2,求(5xy+4x+7y)+(6x-3xy)-(4xy-3y)的值
已知xy^2=-2,求-xy(x^2y^5-xy^3-y)的值.