$\left(x+3\right)\cdot\left(x^2-3x+9\right)$
$\int_0^2e^{-x}cosxdx$
$16x^4-40x^2+25$
$\left(a^{x-1}-b^{x+1}\right)^3$
$sec^2\left(\theta\:\right)+tan^2\left(\theta\:\right)cos^2\left(\theta\:\right)+cos^2\left(\theta\:\right)$
$\cos\left(x\right)^2+\left(\frac{1}{\sin\left(x\right)}\right)^2$
$\left(5x^2+4mn^3\right)^5$
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