Answer
$$n^{2}-9n+14$$
Work Step by Step
Distribute $n$ and $-7$, then add like terms:
$$(n-7)(n-2)=$$
$$n(n)+n(-2)-7(n)-7(-2)=$$
$$n^{2}-2n-7n+14=$$
$$n^{2}-9n+14.$$
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