$\lim_{x\to-4}\left(\frac{x^2+3x-4}{x+4}\right)$
$4x^2-3x+5$
$\int_0^a\left(\frac{1}{\sqrt{x^2+y^2}}\right)dx$
$\frac{m}{m^{-4}}$
$\left|24\right|>\left|-24\right|$
$24x^{2}-8$
$\csc^4-2\csc^2+1=\cot^4$
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