$x-4\left(5x-10\right)>5x-3\left(2x+6\right)$

$=\left(\csc\left(x\right)-\cot\left(x\right)+1\right)\left(\csc\left(x\right)+\cot\left(x\right)-1\right)$

$\frac{dy}{dx}=\frac{y^2}{x^2-1}$

$\lim_{x\to\infty}x\left(\sin\left(\frac{\pi}{4}\right)\right)$

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

$\frac{20x^4y^3z^2}{-5x^2y^2z^2}$

$b^2+30b$