$\lim_{x\to\infty}\left(\frac{c^x}{x^{\left(c+1\right)}}\right)$

$3x+11\le14x+8$

$x^2+1-4x$

$2cos\left(40\right)cos\left(\theta\:\right)-2sin\left(40\right)sin\left(\theta\:\right)=1$

$-1-8r^2+6r-2r^2-8+7r$

$\sqrt{x^2}+25$

$x\left(2x^2+x+1\right)-\left(3x^3+4x^3+4x^2-2x\right)$