这道因式分解的题目求过程
2个回答
展开全部
2x^2+xy-y^2-4x+5y-6
=(2x-y)(x+y)-4x+5y-6
=(2x-y)(x+y)+(2x+2y)-6x+3y-6
=(2x-y)(x+y)+2(x+y)-6x+3y-6
=(x+y)(2x-y+2)-3(2x-y+2)
=(x+y-3)(2x-y+2)
以上答案来自百度知道,以下为链接
http://zhidao.baidu.com/link?url=cmSF-SvH9y_om5wMHiH4nxDIaB4xNqutqCbvMoeQqQ5nvAMA0Evh7ZyTPqxZft8EdRdrI2Qs9m44ecv-YLd3O_
=(2x-y)(x+y)-4x+5y-6
=(2x-y)(x+y)+(2x+2y)-6x+3y-6
=(2x-y)(x+y)+2(x+y)-6x+3y-6
=(x+y)(2x-y+2)-3(2x-y+2)
=(x+y-3)(2x-y+2)
以上答案来自百度知道,以下为链接
http://zhidao.baidu.com/link?url=cmSF-SvH9y_om5wMHiH4nxDIaB4xNqutqCbvMoeQqQ5nvAMA0Evh7ZyTPqxZft8EdRdrI2Qs9m44ecv-YLd3O_
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