$\left(x\:+\:3\right)\left(x\:-\:3\right)$
$\lim_{x\to0}\left(5\arctan\left(\ln\left(x\right)\right)\right)$
$\lim\:_{x\to\:\infty\:\:}\left(\frac{2x+1}{2x}\right)^{5x+3}$
$-12-\left(-8\right)$
$\int_0^2\left(\frac{40}{x^2+4}\right)dx$
$\sin\left(z\right)+\cos\left(z\right)\cot\left(z\right)=\csc\left(z\right)$
$x+6>=9$
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