$\left(33xz\right)\left(12x^2y^3z+13xy\right)$

$1+x<7x+5$

$\lim_{x\to\infty}\left(\frac{11-\sqrt{x}}{11+\sqrt{x}}\right)$

$\frac{dy}{dx}\left(\frac{x\sqrt{x^2+5}}{\left(x+8\right)^{\frac{2}{3}}}\right)$

$1\left(+2\right)+4\left(1\left(-2\right)+1\left(1\right)\right)$

$\lim_{x\to\infty}\left(\frac{5ln\left(x^3\right)}{\sqrt{5x+6}}\right)$

$y+xy=0$