灵鹊做题网因式分解x^2 xy-6y^2 x 13y-6
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x^2-2xy+y^2+x-y=(x-y)^2+(x-y)=(x-y)(x-y+1)
8（x平方-2y平方)-x(7x+y)+xy=8x平方-16y平方-7x平方-xy+xy=x平方-4y平方=(x-2y)(x+2y)手机提问的朋友在客户端右上角评价点【满意】即可.再问：太棒了！连我这
题目不清楚啊,那个是几次方啊?算了,我就按2次方做了啊2x^2+xy-6y^2=(2x-3y)(x+2y)6（x+y)^2-5(x+y)-1=[6(x+y)+1][(x+y)-1]=(6x+6y+1)
题目是不是x^2y-7xy+6yx^2y-7xy+6y=y(x^2-7x+6)=y(x-1)(x-6)
原式=(5x²-15x)-(2xy-6y)=5x(x-3)-2y(x-3)=(x-3)(5x-2y)
x^2+xy-2y^2-x+7y-6=(x+2y)(x-y)-x+7y-6x+2y-3Xx-y2十字相乘得：2(x+2y)-3(x-y)=-x+7y是一次项所以原式＝(x+2y-3)(x-y+2)
xy+2x+y+2=y(x+1)+2(x+1)=(x+1)(y+2)
十字相乘：2x-y3x2y6x^2+xy-2y^2=(2x-y)(3x+2y)
解3x²y+6xy-4x-8=(3x²y-4x)+(6xy-8)=x(3xy-4)+2(3xy-4)=(x+2)(3xy-4)
x^2y+xy^2=xy(x+y)
(x+y)(x-y)-x(y+1)-y(y+1)=(x+y)(x-y)-(x+y)(y+1)=(x+y)(x-2y-1)
a+b-2ab)(a+b-2)+(1-ab)(1-ab)=[(a+b)-2ab][(a+b)-2]+(1-ab)(1-ab)=(a+b)^2-2(ab+1)(a+b)+4ab+(1-ab)^2=(a+
=3(x^2+2xy+y^2)=3(x+y)^2
xy+y平方+x-y-2=xy+x+y^2-y-2=x(y+1)+(y+1)(y-2)=(y+1)(x+y-2)
-x^2+2xy-y^2=-（x²-2xy+y²)=-(x-y)²
原式=3x(x-2y)-4(x-2y)=(x-2y)(3x-4)
原式=-3（x²+y²-2xy)=-3(x-y)²加油!
=x^2y-xy-6xy+6y=xy(x-1)-6y(x-1)=y(x-1)(x-6)
3x^2y-3xy-6y=3y(x²-x-2)=3y(x-2)(x+1);很高兴为您解答,skyhunter002为您答疑解惑如果本题有什么不明白可以追问,再问：我算出来是y（x-6）（x+
xy-x-y+1=x(y-1)-(y-1)=(x-1)(y-1)(xy-x-y+1)^2=(x-1)^2(y-1)^2