$1+2\cos\:^2\left(\theta\:\right)$
$4d^6+11d^3-3$
$20x^3-60^2+45x$
$\left(5x-7z\right)\left(5x+7z\right)$
$\int_{-3}^3\left(5x-7\right)\left(x^2-5\right)dx$
$\frac{x^2}{4}+\frac{x}{2}=2$
$\sec^2\left(4x\right)\left(2+\sqrt{\tan\left(4x\right)}\right)^2$
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