$2\cos\left(x+\sqrt{2}\right)$
$\lim_{y\to-5}\left(3-y\right)\sqrt{y^2-9}$
$cos\left(sin^{-1}\left(\frac{6}{x}\right)\right)$
$x^2y'+xy=4,\:\:y\left(1\right)=3$
$\left(\frac{x^{-2}y^3}{y^4}\right)^2$
$6b^2+5b-25$
$\left(2b+7c\right)^3$
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