Math

(n^2 -3n-21) / (n-7)=

Asked by AnneS2 on 05 Aug 05:39

Last updated by anonymous on 06 Aug 12:56

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Answered by CherieS on 06 Aug 12:56

(n^2 -3n-21) / (n-7)=n+4 R. 7

(n-7)(n+4 )

(n)(n) (n)(4) (-7)(n) (-7)(4)

n^2 +4n -7n -28

n^2-3n-28=-(n^2-3n-28)=-n^2+3n+28

n^2 -3n-21

-n^2+3n+28

7