$\sec^3\left(x\right)\cdot\tan\left(x\right)-\tan^3\left(x\right).\sec\left(x\right)=\sec\left(x\right).\tan\left(x\right)$

$2\left(7-4\right)+3\left(1-5\right)+8$

$\frac{216-125a^3}{6-5a}$

$\int_0^2\left(y^x\tan\left(y^x\right)\right)dx$

$\lim_{x\to\infty}\left(\frac{9-x^2}{\sqrt{12+x}-3}\right)$

$x^{\left(5\right)}+4x^{\left(4\right)}+4x^{\left(3\right)}$

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