$\int\frac{1}{2+x^2}dx$
$\frac{1-\cos\left(4x\right)}{x\sin\left(5x\right)}$
$\left[3\left(a-b\right)+5\right]\left[3\left(a-b\right)-5\right]$
$x^2+16x+7$
$\frac{d}{dx}\cot\left(x\right)=-\csc\left(x\right)$
$\frac{x^6}{x^3}$
$\frac{8^{-3}}{8^{-5}}$
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