(1)1-x²+2xy-y² (2)x²-y²-z²-2yz 分解因式
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 00:58:45
![(1)1-x²+2xy-y² (2)x²-y²-z²-2yz 分解因式](/uploads/image/z/12510882-18-2.jpg?t=%EF%BC%881%EF%BC%891-x%26%23178%3B%2B2xy-y%26%23178%3B+%EF%BC%882%EF%BC%89x%26%23178%3B-y%26%23178%3B-z%26%23178%3B-2yz+%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F)
x){NC
5eCskmJJ[(iJuQeӎ?~"}_`gCo7UjTVjB B@ڕ A,腩ШԮB5h$Pdn~qAb6`Ա
x\ @g,FS'Rt/"$q(Kлs`J`tLz@!9
W
(1)1-x²+2xy-y² (2)x²-y²-z²-2yz 分解因式
(1)1-x²+2xy-y² (2)x²-y²-z²-2yz 分解因式
(1)1-x²+2xy-y² (2)x²-y²-z²-2yz 分解因式
(1)1-x²+2xy-y²
=1-(x-y)²
=(1-x+y)(1+x-y)
(2)x²-y²-z²-2yz
=x²-(y+z)²
=(x+y+z)(x-y-z)
(1) 1-x²+2xy-y²
=1-(x²-2xy+y² )
=1- (x-y)²
=(1-x+y)(1+x-y)
(2) x²-y²-z²-2yz
=x²-(y²+z²+2yz)
=x²- (y+z)²
=(x+y+z)(x-y-z)