$\lim_{x\to0}\left(1+\frac{9}{x}\right)^{\frac{x}{6}}$

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

$-\left(e^we^{w+2}\right)$

$\frac{1}{8x-9}-\frac{1}{9x-6}$

$-5+\left(-13\right)x\left(-14\right)-\left(-6\right)$

$t^3+3t^2+3t+t^3$

$\int3xcos^3\left(x^2+2\right)dx$