$20x-7=5+14x$
$19\cdot27$
$\int\left(3x^5+\frac{1}{2}\right)^{\left(-\frac{2}{7}\right)}\left(\frac{4}{3}\right)x^4dx$
$3sen\theta\:-cos2\theta\:+1=0$
$2x^2+2x-3;\:x=-2$
$\frac{\left(m^2+m+1\right)}{m^3-1}$
$\left(x^3+2x^2\right)\left(x^3-2x^2\right)$
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