$\left(2+\left(6-10\right)\right)-\left(7-14\right)$

$\frac{4+36t^2\sin\left(3t\right)^2+9t^3}{t}$

$\lim_{x\to\infty}\left(\frac{3+x}{2}\right)$

$3y^2y'+y^3=e^{-x\:},\:y\left(0\right)=0$

$-8x^2y-\left(-4ax^2\right)$

$\int x\:sec^2\:6x\:dx$

$\lim_{x\to\infty}\left(\frac{\sqrt{x^7-2}}{x^6-1}\right)$