公司财务需要做什么:(x+y)(x+y-6)+9如何分解
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分解因式
^
^
(x+y)(x+y-6)+9
=(x+y)^2-6(x+y)+9
=(x+y-3)^2
(x+y)(x+y-6)+9
=(x+y)^2-6(x+y)+9
(x+y-3)^2
(x+y)(x+y-6)+9=(x+y)^-6(x+y)+9=(x+y-3)^
(x+y-3)^2
(x+y)(x+y-6)+9
=(x+y)^2-6(x+y)+9
=(x+y-3)^2
(x+y)(x+y-6)+9
=(x+y)^2-6(x+y)+9
(x+y-3)^2
(x+y)(x+y-6)+9=(x+y)^-6(x+y)+9=(x+y-3)^
(x+y-3)^2