$5x-8=x+32$
$2\cdot\left|8-\left(15-4\right)\right|$
$\int cot^44xdx$
$\lim_{x\to0}\left(\frac{\cos\left(mx\right)-cos\left(nx\right)}{x^2}\right)$
$\int\frac{5x+2}{\left(x-5\right)^2\left(x-2\right)}dx$
$x^2-2x+1=16$
$x^4-2x^2+4$
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