$\:0\::\:-\:45$

$x^2+10x-48<0$

$\lim_{x\to\infty}\left(\left(x^2+1\right)\sin\left(\frac{1}{x}\right)\right)$

$\lim_{x\to-0.0001}\frac{sin3x}{tan2x}$

$\frac{d}{d\left(1\right)}\left(\frac{3}{5\sqrt{x}}-\frac{1}{2x}\right)$

$\left(5i-6\right)^3$