康艺验钞机升级软件:数学题目分解因式
来源:百度文库 编辑:查人人中国名人网 时间:2024/05/23 17:04:45
(xy+1)(x+1)(y+1)+xy
(xy+1)(x+1)(y+1)+xy
=(xy+1)(xy+1+x+y)+xy
=(xy+1)²+(x+y)(xy+1)+xy
=(xy+1+x)(xy+1+y)
(xy+1)(x+1)(y+1)+xy
=(xy+1)(xy+1+x+y)+xy
=(xy+1)²+(x+y)(xy+1)+xy
=(xy+1+x)(xy+1+y)