$\frac{\tan\left(8x\right)-\tan\left(7x\right)}{1+\tan\left(8x\right)\tan\left(7x\right)}$

$y^2-30y-365$

$\left(x-1\right)\left(x+1\right)\left(x-3\right)\left(x+2\right)$

$\frac{d}{dx}\left(y=\frac{\left(x^2+1\right)^{\frac{1}{3}}}{x^2+2}\right)$

$a^4+6y+9^2$

$\frac{d}{dx}\:6x+5$

$\int\sin^6\left(9x\right)dx$