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

$3x\:+\:2y\:-\:1\:-5x\:+\:4y$

$cos\:3\left(o\right)\:=\:\frac{1}{2}$

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

$\left|6\left(8^2\right)-2\left(4^2\right)\right|$

$\lim_{x\to1}\left(\frac{x-3}{1-x^2}\right)$

$\lim_{x\to\infty}\left(\frac{x^x}{e^{10x}}\right)$