x2+2xy-3y2+3x+y+2 因式分解
问题描述:
x2+2xy-3y2+3x+y+2 因式分解
答
x2+2xy-3y2+3x+y+2
=(x+3y)(x-y)+3x+y+2
=(x+3y+2)(x-y+1)