$5x+6<2x-1$

$\tan^2\theta\cos\theta+\cos\theta$

$\left(7a^4-5a^2b^3\right)^3$

$5-\infty$

$\lim_{x\to0}\left(\cos\left(e^{x^2}\right)\right)^{\frac{4}{x^4}}\:$

$\lim_{x\to\infty}\left(\frac{ln\left(ln\left(n\right)\right)}{ln\left(n\right)}\right)$

$\left(x+2\right)\:\left(x-7\right)$