$\frac{1}{2}x^2+x$
$2c-9>-1$
$\left(\frac{2}{3}a+\frac{3}{4}b\right)^2$
$\int\cos^7ydy$
$.5x+6=x-4$
$-1-8b^2+6b-2b^2-8+7b$
$\lim_{x\to-4}\left(\frac{x^2-5x+6}{x+2}\right)$
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