$\tan b+\frac{\cos b}{1+\sin b}=\sec b$
$\:\left(\:\frac{3}{2}-x\right)^2$
$85\cdot39$
$12+\left(-5\right)\cdot\left(8-9\right)$
$\frac{d}{dx}6\left(3x^3+x^2\right)^3$
$4n^2\:+\:28n\:+\:24$
$\int_0^{\infty}\left(\frac{3x^2}{\sqrt{1+x^3}}\right)dx$
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