$2csc\left(x\right)cos^2\left(\frac{x}{2}\right)$
$m^2-20mn+100n^2$
$cos3x\:=\:-1$
$\left(w+14\right)\left(w-14\right)$
$\frac{z^4-7z^2+12}{z-2}$
$1x\:+1x$
$\left(5x^2+1\right)^4$
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