$\frac{\left(\tan\left(b\right)\sec\left(b\right)\right)\left(\tan\left(b\right)-\sec\left(b\right)\right)}{sec\:\left(b\right)}$

$9^2\cdot\sqrt{4}$

$-4^{-1}.4^3$

$\int\frac{-2x+15}{\left(x+4\right)\left(x-3\right)}dx$

$\int\sqrt{5x^4-x^2+10}\left(10x^3-x\right)dx$

$1,4,7,10\:sequence$

$\frac{3\cdot\left(xy^2+3xy+y^3-y^2\right)}{x+y\cdot y^2}$