$9m^4-30m^2n+25n^2$
$\int\cos\left(x^3+2\right)x^2\:dx$
$4\left(-3\:-\:2t\right)$
$\left(n^6-25m^4\right)=\left(n^3+5m^2\right)\left(n^3-5m^2\right)$
$10y^2-19xy+7x^2+12xy$
$\frac{\left(2x+1\right)}{\left(x^2+2x+1\right)}$
$x^2+x+10=0$
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