$\left(\sqrt[6]{2^4}\right)^3$
$4cos\left(2x\right)+3cosx\:=\:1$
$2ab+5c+5a+2cb$
$25x^2+50x+9$
$\left(m-7n^3\right)\left(m+7n^3\right)$
$-21+7\cdot\left(-2\right)$
$\frac{x^2-16}{x+44}$
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