$$4\mu^{2}-10\mu-6; 4p^{2}-6p-4p-6; -2f(2f-3)-2(2f+3); (2x-3)(-2x-2)$$
$2\left(n-3\right)\left(2n-3\right)\left(10n-9\right)\left(n+1\right)\left(2n+1\right)\left(4n^{2}-6n-47\right)$
$$4n^{2}-10n-6=2\left(n-3\right)\left(2n+1\right)$$ $$4n^{2}-6n-47=4\left(n-\left(-\frac{1}{4}\sqrt{197}+\frac{3}{4}\right)\right)\left(n-\left(\frac{1}{4}\sqrt{197}+\frac{3}{4}\right)\right)$$ $$-20n+18=2\left(-10n+9\right)$$ $$-4n^{2}+2n+6=2\left(-n-1\right)\left(2n-3\right)$$
$$2\left(n-3\right)\left(2n-3\right)\left(10n-9\right)\left(n+1\right)\left(2n+1\right)\left(4n^{2}-6n-47\right)$$
$$320n^{7}-1728n^{6}-1584n^{5}+16152n^{4}-7064n^{3}-22626n^{2}+7740n+7614$$
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$4n^{2}-10n-6,\ 4n^{2}-6n-47,\ 18-20n,\ 6+2n-4n^{2}$