Answer:
16
Step-by-step explanation:
[tex]\large{ \star \fcolorbox{magenta}{purple}{ \fcolorbox{magenta}{blue}{ \fcolorbox{magenta}{pink}{ \fcolorbox{magenta}{red}{ \sf{ 16}}}}}} \star[/tex]
[tex] {4}^{2} = 16[/tex]
