This expression is equivalent to $\displaystyle-{i}{\left({5}-{2}{i}\right)}\usepackage{cmbright}\Huge\$ .

$\displaystyle-{i}{\left({5}-{2}{i}\right)}={\left(-{i}\right)}{\left({5}\right)}-{\left(-{i}\right)}{\left({2}{i}\right)}=-{5}{i}-{\left(-{2}{{i}}^{{2}}\right)}=-{5}{i}+{2}{{i}}^{{2}}\usepackage{cmbright}\Huge\$