$\frac{\left(2a+b\right)^2-\left(2a-b\right)}{2\left(2ab\right)}^2$

$5-\left(-3+7+2\right)$

$\frac{x+1}{\:2}+\frac{x+2}{3}+\frac{x+3}{4}\ge\:\frac{77}{4}$

$3\left[7x-4\right]\left(x-3\right)\left[\right]+1$

$x+3=24-2x$

$\int\frac{\left(12x+6\right)}{\left(3x^2+8x+5\right)}dx$

$\lim_{x\to\infty}\left(\frac{1+\left(\frac{10}{x}\right)}{\left(\frac{1}{5x}\right)}\right)$