$\displaystyle{f{{\left({x}\right)}}}={6}{{x}}^{{2}}-{5}{x}+{7}\usepackage{cmbright}\Huge\$

$\displaystyle{g{{\left({x}\right)}}}={6}{{x}}^{{2}}-{3}{x}+{7}\usepackage{cmbright}\Huge\$

The difference $\displaystyle{g{{\left({x}\right)}}}-{f{{\left({x}\right)}}}\usepackage{cmbright}\Huge\$ is one term, which is _____.