<PRE><B>Question 1051763</B>
 (4n+7)(n^2-7n-7) =
:
7n^2 -49n -49 +4n^3 -28n^2 -28n =
:
4n^3 -21n^2 -77n -49 =
:
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n(4n^2 -21n -77) -49
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:

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