$6x^2+4\left(x^{2\:}-1\right)$
$\log\left(p\right)=5t$
$3xy\cdot15xy$
$\left(\frac{2x^5}{5y^5}\right)^3$
$\frac{x^2}{9}\:+\frac{2xy}{3}\:-\:y^2$
$m^2-2m-48$
$9z^2-2+10-5z^2$
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