$\frac{d}{dx}y^2=12x$

$\left(\frac{1}{2}a^3\cdot\frac{1}{2}\right)^2$

$\int_{\frac{\pi}{3}}^{\frac{\pi}{4}}\left(-cot^2x\right)dx$

$\lim_{x\to\pi}\left(\frac{\tan\left(5x\right)}{\sin\left(3x\right)}\right)$

$\lim_{x\to3}\frac{\sqrt{4x+28}-4}{x-3}$

$\left(12n-6b^2\right)$

$4x^2-441$