$-9\left(-5k+3m\right)+9m-5\left(-5m+9k\right)$

$x\:^2+3x+8>x+3$

$\frac{1}{64}x^3+27$

$\lim_{x\to\infty}\:sin\left(\frac{\left(x-1\right)}{\left(x+1\right)}\right)$

$x^2-x-2>0$

$\int\left(9x+1\right)e^{\frac{x}{3}}dx$

$\lim_{x\to\infty}\left(\left(\frac{2n^2-3}{\left(2n^2+8\right)}\right)^n\right)$