$\int\:\frac{xe^x}{\left(1+x\right)^2}\:dx$
$8\cdot4\cdot5$
$\lim_{x\to0}\left(\frac{5x^2+\:e^{-2x}}{-4x^2+x}\right)$
$\left(-2x^2\right)\left(-4x^3\right)$
$4m^2-8m+3=0$
$\frac{\left(x^2+2\right)}{x}$
$\left(ab+2c\right)^2$
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