$\frac{5}{3\:}x\:-\frac{1}{4}x\:+\frac{7}{3}x$
$\lim_{x\to-\infty}\:ln\left(x^2+1\right)-\frac{2}{\left(x+1\right)}$
$x^2+4x-5x+5^2$
$\left(x^m-y^2\right)^2$
$\lim_{x\to\infty}\left(1+e^{-x}\right)$
$2\sqrt{m^2y}-8m\sqrt{y+5}\sqrt{ym^2}$
$8c-20c-c$
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