$\log_{x+1}\left(y\right)=2$

$\left(-36+27\right)\:.\:\left(-9\right)\:\:\:\:\left(-36\right)\:.\:-9\:+\:\left(27\right)\:.\:\left(-9\right)$

$\frac{dy}{dx}\left(\frac{3x^2-5}{2x+1}\right)^3$

$cot\left(\frac{\pi}{2}-\left(x\right)\right)\cot\left(x\right)=1$

$\int\frac{1}{\left(1+\cos\:\:\left(x\right)\right)^2}dx$

$\lim_{x\to1}\left(\frac{x^33x^2+2}{x^3-4x^2+3}\right)$

$2\log\left(y+5\right)=\log\left(20\right)-\log\left(5\right)$