$\frac{d}{dx}y=x^42x^2+5x^2-2x$

$\lim_{x\to\infty}\left(\frac{5\cos\left(x\right)}{x+3}\right)$

$\lim_{x\to\frac{\pi}{6}}\left(\frac{\sin\left(x-\frac{\pi}{6}\right)}{\sqrt{3}-2\cos\left(x\right)}\right)$

$14>x$

$\left(6a^3b^6\right)^3$

$\int_0^4\left(ye^y\right)dy$

$3x^{2}+2x-5$