$\frac{dy}{dx}\left(y=-\frac{cos\left(y\right)}{-xsin\left(y\right)+5}\right)$

$27-\left(7-5^2\right)+3\cdot5$

$x^2-22-484$

$\int3\left(3x-4\right)^3dx$

$\lim_{x\to\infty}\left(\sqrt{\frac{9x^2+6}{5x-1}}\right)$

$\frac{-3x+12>0}{x+1>0}$