$\sec^2x\left(-2\right)=0$
$\lim_{x\to0}\left(\frac{3sin\left(-.001\right)}{\left(-.001\right)}\right)$
$5^3+5^3$
$45\cdot111$
$\frac{\left(\frac{1}{6}a^2+\frac{1}{36}ab-\frac{1}{6}b^2\right)}{\frac{1}{3}a+\frac{1}{2}b}$
$\int6\cos^5\frac{x}{3}dx$
$\lim_{x\to2}\left(\frac{x^3-4x^2+4x}{x^2-4x+4}\right)$
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