Math

(10n + 7)(-7n + 7)

Asked by AnneS2 on 28 Mar 05:11

Last updated by anonymous on 30 Mar 14:09

1 Answers

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Answered by CherieS on 30 Mar 14:09

= (10n + 7)(-7n + 7)

=(10n)(-7n) (10n)(+7) (7)(-7n) (7)(7)

=-70n2 70n -49n +49

=-70n2 +21n +49