因式分解方法x2－xy＋2x－y－3是x方-xy+2x-y-3,

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：数学作业时间：2024/07/04 05:14:25

x²-xy+2x-y-3
=x(x-y)+(x-y)+x-3
=(x-1)(x-y)+x-3
=(x-1)(x-y-1)-2
x²-xy+2x+y-3
=x(x-y)-(x-y)+3(x-1)
=(x-1)(x-y)+3(x-1)
=(x-1)(x-y+3)

因式分解方法x2－xy＋2x－y－3是x方-xy+2x-y-3, 2x方-xy-3y方因式分解十字相乘 3x方+5xy+2y方因式分解 2x2+xy-3y2+x+4y-1因式分解因式分解x^3y－6x^2y^2＋9xy^3 因式分解x2+y-xy-x 待定系数法因式分解：（1）x方+2xy+y方+x+y-2 （2）x方+xy-2y方+2x+7y-3 因式分解x^3+x^2y-xy^2-y^3 x^3-x^2y-xy^2+y^3因式分解因式分解x^3+x^2y-xy^2+y^3 x^2y+3xy^2-x-3y因式分解 -x^3y^3-x^2y^2-xy 因式分解.