[tex] \bf \: 5 {}^{ - 1} - ( - \frac{1}{5} ) {}^{2} \\ [/tex]

[tex] \bf \: \frac{1}{5} - ( - \frac{1}{5} ) {}^{2} \\ [/tex]

[tex] \bf \: \frac{1}{5} - \frac{1}{25} \\ [/tex]

[tex] \large \bf{ \blue{\boxed{ \blue{ \boxed{ \frac{4}{25} }}}}}[/tex]