$10\:+\:3\:x\:2\:-\:7$
$\int t\:sec^2\left(7t\right)dt$
$\frac{1}{2}+\frac{37}{2}$
$2x^2+12x-5=0$
$\frac{1}{7-x}\:center\:4$
$\lim_{x\to-4}\frac{\left|x+4\right|}{x^2-16}$
$\lim_{x\to-2}\left(\frac{9x^2-36}{3x+6}\right)$
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