The greatest common factor of 3m2n + 12mn2 is
\(3m^{2}n + 12mn^{2}\)\(3mn( m + 4n)\)So, \(3mn\) is the greatest common factor of \(3m^{2}n + 12mn^{2}\)
\(3m^2n + 12mn^2=3mn\cdot(m+4n)\)
