$\int\frac{4\left(q+5\right)}{q^3+5q^2+6q}dq$
$4\left(3x-1\right)+x-1$
$\frac{d^2}{dx^2}\left(\sqrt{9-r}\right)$
$\frac{1-x^3}{1+x}$
$\lim_{x\to\infty}\left(\frac{2x^4+3}{5x^3-x^2+3}\right)$
$1.45\cdot100$
$\frac{d}{dx}\cot\left(x\right)=-\csc\left(x\right)$
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