$12x^5-6x^3$
$169x^2-14x^2+16$
$\sqrt{-108-\sqrt{-3}}$
$\left(5+\sqrt{2}\right)\left(5-\sqrt{2}\right)=23$
$\left(10x+8\right)\:\left(10x-8\right)$
$8\cos\left(x\right)=4$
$\sin\left(w\right)\left(1-\cot^2\left(w\right)\right)$
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