xy=(x-5)*(y+2)的化简如题

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xy=(x-5)*(y+2)的化简如题xy=(x-5)*(y+2)的化简如题xy=(x-5)*(y+2)的化简如题xy=(x-5)*(y+2)=xy-5y+2x-10所以2x-5y+10=0或y/2-

xy=(x-5)*(y+2)的化简如题
xy=(x-5)*(y+2)的化简
如题

xy=(x-5)*(y+2)的化简如题
xy=(x-5)*(y+2)=xy-5y+2x-10
所以
2x-5y+10=0
或
y/2-x/5=1

2x-5y=-10

xy=(x-5)*(y+2)
xy=xy+2x-5y-10
2x-5y=10

2X－5Y＝10

已知xy^2=-2,求-xy（x^2y^5-xy^3-y)的值. 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值已知xy=2(x+y),求(5x-xy+5y)/(3xy-x-y)的值已知xy=2(x+y),求5x-xy+5y/3xy-x-y的值已知x-y=3xy,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 xy/x+y=2 求3x-5xy+3y/-x+3xy-y的值? 若xy=2（x+y),求（3x-5xy+3y)÷(-x+3xy-y) 的值已知xy/x+y=2,求代数式8x-5xy+8y/-x+3xy-y的值已知X+Y=2XY,求4X-5XY+4Y 除以X+XY+Y 的值已知X+Y=2XY,求4X-5XY+4Y 除以X+XY+Y 的值已知x+y=2xy,求4x-5xy+4y/xy-x-y的值 xy=(x-5)*(y+2)的化简如题已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+x(xy+y)的值已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+2(xy+y)的值已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值若x+y=5,xy=6,求x^2y+xy^2的值 x+y=8,xy=-2,求(5xy+4x+7y)+(6x-3xy)-(4xy-3y)的值