$2\cos^2\left(3x\right)-1$
$\left(\frac{1}{4}xy^3-w^5+\frac{2}{3}\right)\left(-2y^4w\right)$
$9v^2-25$
$x^2+14x=32$
$\int\frac{2x^2-25x-33}{\left(x-6\right)\left(x+1\right)}dx$
$\left(\frac{1}{3}m-n\right)^2$
$2x^2+12x-5=0$
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