$\frac{6x^2-5}{x^2-1}$
$\cos\left(b\right)+2\sin^2\left(b\right)=1$
$9\left(s+11\right)=9$
$1.6+.18+2.3$
$\frac{dy}{dx}\left(\frac{y^2+1}{x+2}\right)$
$\int\left(x^2\:+3x\right)\cos2x\:dx$
$\frac{1+\cos}{\cos}=\sec+1$
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