$2\tan\left(x\right)^2+5\tan\left(x\right)=0$

$\left(3x^2y^3-4\right)\left(3x^2y^3-7\right)$

$26\cdot22$

$\lim_{x\to1}\left(\frac{8x-8}{\ln\left(x\right)\sin\left(\pi x\right)}\right)$

$\frac{dy}{dx}=\sqrt{39}$

$\frac{x^3-5x^2+5x-3}{x+3}$

$\lim_{x\to0}\left(\frac{x^3-1}{4x^3-x-1}\right)\:$