分解因式x^2-xy+2x+y-3````

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/18 12:11:17
分解因式x^2-xy+2x+y-3````分解因式x^2-xy+2x+y-3````分解因式x^2-xy+2x+y-3````x^2-xy+2x+y-3=(x^2+2x-3)-(xy-y)=(x+3)

分解因式x^2-xy+2x+y-3````
分解因式x^2-xy+2x+y-3
````

分解因式x^2-xy+2x+y-3````
x^2-xy+2x+y-3
=(x^2+2x-3)-(xy-y)
=(x+3)(x-1)-y(x-1)
=(x-1)[(x+3)-y]
=(x-1)(x+3-y)

等于(X+3)(X-1)-y(x-1)=(x+3-y)(x-1)

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