$\frac{x^3-1}{x^2}$

$\lim_{x\to0}\left(\frac{2ln\left(1+e^x\right)-x-ln4}{x^2}\right)$

$\frac{1}{tan^2\left(x\right)}-\frac{1}{cos^2\left(x\right)}$

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

$\int_{-3}^1\left(2x-1\right)dx$

$\cos\left(v\right)\cdot\sin\left(v\right)=\cos\left(v\right)$

$2^2x^2-2\left(2\right)\left(3\right)xy+3^2y^2$