因式分解x²+2xy-3y²+3x+y+2

分类: 作业答案 • 2023-01-18 22:03:13

问题描述：

答

x²+2xy-3y²+3x+y+2
=(x+3y)(x-y)+(x+3y)+2x-2y+2
=(x+3y)(x-y+1)+2(x-y+1)
=(x-y+1)(x+3y+2)