$\frac{14}{x-2}-\frac{18}{x+1}=\frac{22}{x^2-x-2}$

$\int\left(\cos\left(3x-1\right)\right)dx$

$12x^4y^5-42x^3y^4+8x^2y^3$

$\left(+14\right)-\left(-12\right)$

$\left(10-3\cdot6\right)-2\cdot\left[5+3\cdot\left(4-7\right)\right]$

$\frac{cos^2x+14cosx+49}{cosx+7}$

$\int_0^{\frac{\pi}{3}}\left(\tan^5\left(x\right)\sec^4\left(x\right)\right)dx$