$5\cot^2x-2\cot x=0$
$\int\frac{v^{2}+1}{v^{2}\left(u+1\right)}du$
$-20y+20=-20$
$\lim_{x\to infinity}\left(\frac{5x+cos\left(x\right)}{5x+sin\left(x\right)+2}\right)$
$2x^2-11x+12$
$\frac{24x^3+16x^2-8x}{-4x}$
$x3^2^2^2^2$
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