Find the opposite of $\displaystyle{4}{{x}}^{{2}}-{3}{x}+{2}\usepackage{cmbright}\Huge\$ . Fill in the missing coefficient.

$\displaystyle{\left(-{1}\right)}{\left({4}{{x}}^{{2}}-{3}{x}+{2}\right)}=?{{x}}^{{2}}+{3}{x}-{2}\usepackage{cmbright}\Huge\$