$36a^2-96ab+64b^2$
$9\:xyz^4\:18\:y^3\:z^2$
$\left(x+1\right)\left(2x+3\right)-2\left(x^2+1\right)$
$\lim_{x\to-3}\left(\frac{\left(x^5+243\right)}{2x^2+11x+15}\right)$
$4.5^{5\:}$
$\left(k+11y\right)^2$
$2\frac{dy}{dx}=2xy+2y$
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