$\left(\left(3y^{-2}z^2\right)^5\right)^{-1}$
$\sqrt{306x^7y^9y^{10}}$
$\left(1+\left(\frac{d}{r}\right)^2\right)^{-\frac{3}{2}}$
$\sec y+\tan y$
$\left(8x+3\right)\left(6x+5\right)\left(7x+3\right)$
$\lim_{x\to-2}\left(\frac{x^2-4}{x}\right)$
$\left(\sin y+1\right)^2=\sin^2y+1$
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