$20y^2-7y-3=0$
$2\pi r^2+500\pi r$
$-749.865\:\cdot\:-35$
$\frac{dy}{dx}x=\frac{2+y^2}{3}-y$
$\left(7x^3\right)\left(4x^2-2x-1\right)$
$2x^2+4xa^2$
$\int\left(\frac{\left(\sqrt{x}+2\right)^7}{2\sqrt{x}}\right)dx$
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