$\lim_{x\to0}\left(\frac{\left(2e^{2x}-2\right)^3}{3e^{x^2}-3x-3}\right)$

$\left(a^2b+8\right)\left(a^2-6\right)$

$\left(\sqrt{2+\sqrt{3}}-\sqrt{2-\sqrt{3}}\right)^2$

$2xydx+x^2-1dy=0$

$3\left(8+3\right)-4$

$\frac{x^3+5x^2-3x+1}{x+2}$

$\frac{\sec\left(x\right)+1}{\sec\left(x\right)-1}$