$\frac{3x^2+7x+5}{3x+1}$
$x^2-5x+25=0$
$y''-y'=0$
$\frac{16}{1}+\frac{16}{1}$
$\lim_{x\to-2}\left(\frac{x^2+14x+24}{x^2+2x}\right)$
$\sec\:^2\left(x\right)-2\sec\:\left(x\right)\tan\:\left(x\right)+\tan\:^2\left(x\right)$
$\left(+8\right)-\left(x\right)=20$
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