求一道数学题答案5x^2-10xy+5y^2-2x+2y

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5x^2-10xy+5y^2-2x+2y
=(5x^2-10xy+5y^2)－(2x－2y)
=5(x²－2xy＋y²)－2(x－y)
=5(x－y)²－2(x－y)
=(x－y)[5(x－y)－2]
=(x－y)(5x－5y－2)

求一道数学题答案5x^2-10xy+5y^2-2x+2y 问一道数学题已知xy=-2,x+y=3,求式子（3xy+10y+[+5x-(2xy+2y-3x)] 怎么写啊求解一道数学题；（xy-1)^2+(x+y-2)(x+y-2xy) 分解因式一道数学题.已知1/x-1/y=4,求2x+3xy-2y/-y-2xy+x的值已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+x(xy+y)的值一到八下数学题已知x分之1+y分之一=5,求2x-3xy+2y除以x+2xy+y的值表达的不是很好, 求一道因式分解的结果：2x^2+xy-6y^2-x-16y-10 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值已知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