关于希望的诗句:因式分解

来源:百度文库 编辑:高校问答 时间:2024/05/03 06:51:47
2x^2-3xy-2y^2+5x+5y-3

2x^2-3xy-2y^2+5x+5y-3
=(2x+y)(x-2y)+6x+3y-x+2y-3
=(2x+y)(x-2y)+3(2x+y)-x+2y-3
=(2x+y)(x-2y+3)-(x-2y+3)
=(2x+y-1)(x-2y+3)