$\lim_{x\to3}\left(\frac{x^3-2x^2-5x+6}{3-x}\right)$

$\lim_{x\to\infty}\:\frac{x-2}{\sqrt{x^2+1}}$

$8m^2-14m-15$

$\frac{12n^3}{3\left(n^4\right)^2}$

$\sqrt{2}\cdot5\sqrt{13}$

$\int_{x+1}^{\frac{1}{3}\left(7-x\right)}\left(y^2\right)dx$

$2\sin\left(4x\right)=-\sqrt{2}$