Resposta :
[tex]\large\boxed{\begin{array}{l}\sf[100-(5^2-3^2)]:2\\\sf[100-(25-9)]:2\\\sf[100-16]:2\\\sf[84]:2\\\sf84:2\\\sf42\end{array}}[/tex]
[tex]\large\boxed{\begin{array}{l}\sf[100-(5^2-3^2)]:2\\\sf[100-(25-9)]:2\\\sf[100-16]:2\\\sf[84]:2\\\sf84:2\\\sf42\end{array}}[/tex]