$\int\frac{x+1}{\left(x^2+4x+5\right)^2}dx$
$sec^4+sec^2$
$\lim_{x\to\infty}\left(\frac{1}{x}-2\right)$
$24\:\frac{dy}{dx}$
$\log\left(x\right)-\log\left(6\right)=\log\left(\frac{2}{3}\right)$
$-8x^2+x-13+6x^2-3x-2$
$b^2mn\:;\:b=2;\:m=\frac{1}{2}\:$
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