$-\left(\frac{9}{3}\right)\cdot\left[-2+\left[3\cdot\left(1-5\right)-\left(8-4\right)\right]\right]$

$\int_0^6\left[\left(3x\right)-\left(x^2-3x\right)\right]dx$

$\left(p-3c\right)\left(p+3c\right)$

$15\cdot3+6$

$\int\:\frac{\left(e^2+2\right)xe^{x^2}}{\left(e^{x^2}+2\right)}dx$

$\frac{d}{dx}\left(3x^2+10^{xy}\right)=\left(4y^3+e^{xy}\right)$

$\int\frac{sin\left(ln\left(6x\right)\right)}{x}dx$