2x^2-5xy=2y^2-5x-5y-25 因式分解打错了……是2x^2-5xy+2y^2-5x-5y-25

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2x^2-5xy=2y^2-5x-5y-25 因式分解打错了……是2x^2-5xy+2y^2-5x-5y-25
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2x^2-5xy=2y^2-5x-5y-25 因式分解打错了……是2x^2-5xy+2y^2-5x-5y-25
2x^2-5xy=2y^2-5x-5y-25 因式分解
打错了……是2x^2-5xy+2y^2-5x-5y-25

2x^2-5xy=2y^2-5x-5y-25 因式分解打错了……是2x^2-5xy+2y^2-5x-5y-25
2x2-5xy+2y2-5x-5y-25
=（2x-y）（x-2y）+ 5(2x-y)-5(x-2y）-25
=（2x-y）（x-2y+5）-5（x-2y+5）
=（x-2y+5）（2x-y-5）

2x^2-5xy+2y^2-5x-5y-25
=(2x-y)(x-2y)-[5(2x-y)-5(x-2y)]-25
=(2x-y-5)(x-2y+5)

2x^+xy-y^-4x+5y-6=? 已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+x(xy+y)的值 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 已知X-XY-2Y=0求2X+3XY-Y/X-2XY+5Y 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Y-x=3xy,求(5x+3xy-5y)÷(x-2xy-y) 已知xy/x+y=3,求代数式2x-5xy+2y/x-3xy+y 已知xy/x+y=2,求代数式3x-5xy+3y/-x+2xy-y的值 已知x+y分之xy=2,那么3x-5xy+3y分之3xy-x-y= 若xy/x+y=2,则3x-5xy+3y/-x+3xy-y=?/是分之 如果xy/x+y=2,那么3x-5xy+3y/-x+3xy-y=? 当x+y=5xy时,（3x+xy+3y)/x-2xy+y=? 已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y= 诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy)