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

$45\cdot110$

$\left(\frac{2}{3}x^2y^2-\frac{1}{4}xy^2\right)+\left(\frac{2}{3}x^2y^2-\frac{1}{4}xy^2\right)$

$\frac{d}{dx}\sqrt{3x-6x^3}$

$\int\left(\frac{2x}{\left(1-x\right)^5}\right)dx$

$\lim_{x\to0}\left(\frac{sin\left(\frac{5}{2}w\right)}{sin\left(\frac{w}{2}\right)}\right)$

$8ab+3bc-9ba-10cb$