$2\sec\left(\frac{\pi}{5}\right)-\frac{2}{3}\cos\left(\frac{\pi}{8}\right)$

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

$\int x\cdot\left(4x+1\right)^8$

$\frac{dy}{dx}\left(5x^2y+4y^2z+3yz=0\right)$

$\left(-3\right)\left(-13\right)+10-6-4$

$24xyz+12xyz-18xyz-5xyz$

$\int\:\frac{9x^6+6x^2-4x-4}{2x^4}dx$