$\sec\left(x\right)-\cos\left(x\right)-\sin\left(x\right)\tan\left(x\right)$
$\lim_{n\to\infty}\left(\frac{sin\:n\pi}{n}\right)$
$\frac{dy}{dt}=y\left(3t^2+2t\right)$
$m^2+8+8$
$4x^2+10x-16=0$
$\left(x+2\right)y=0$
$\left(2a+6\right)\left(-6\right)$
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