$\int\frac{\sec\left(x\right)^2+\csc\left(x\right)^2}{\cot\left(x\right)}dx$

$\frac{\left(\sec\left(x\right)-5\right)}{1-5\cos\left(x\right)}$

$cos\:=-\frac{4}{5}$

$12-7a-10a^2$

$\frac{d}{dx}\left(4x^5+2y^3\right)=ln\left(xy\right)$

$8x+3\cdot6x+5\cdot7x+3\cdot2$

$\frac{1}{2}\left(-2a^2b\right)^4ab^2$