$\lim_{x\to0}\left(\frac{\sqrt{x-2}}{x+2}\right)$
$p^2-20p+100p$
$4\log_x\left(6\right)-2\log_x\left(4\right)$
$0.75+0.476+0.9846+0.984$
$4\cos^2\left(5x\right)=5$
$\cot\left(40\right)=\frac{\cos\left(40\right)}{\sin\left(40\right)}$
$\int5x^2\cdot\cos\left(3x\right)dx$
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