$\left(9x+8\right)^3$
$-\left(5\right)^2\:+\:-\left(3\right)^2$
$\lim_{x\to0}\left(\frac{\tan\left(3x\right)-3\tan\left(x\right)}{\sin\left(3x\right)-3\sin\left(x\right)}\right)$
$1+\cot^2\infty=\csc^2\infty$
$-13\left(2\right)+\left(-3\right)$
$\frac{d}{dx}x^3-y^3=x+8$
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