$y=\frac{1}{4}ln\left(\frac{x^2}{x^2-4}\right)-\frac{1}{x^2-4}$
$m^3-2m^2n+\:mn^2$
$x^3-\frac{x^5}{4}+\frac{x^7}{9}-\frac{x^9}{16}$
$\left|-48\right|$
$2x^2.\left(1-2x+2x^3\right)$
$2x^3-7x^2-x+6$
$\int_{-1}^3\left(e^{3x}\right)dx$
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