Question

Cálculo 3 elevado a dois +3elevado a dois negativo

Answer 1

$3^2+3^{-2}\to\\\\ pot\^encia ~~~com~~~expoente~~negativo, ~~~invertemos~~~a~~~fra\c c\~ao\\e ~~~tornamos~~~o~~~expoente~~~positivo;\\\\ 3^2 + \dfrac{1}{3} ^2\to\\\\ 3^2 + \dfrac{1^2}{3^2}\to\\\\ 9 + \dfrac{1}{9} \to~~~~ mmc=9\\\\ \dfrac{81+1}{9} \to\\\\ \large\boxed{\dfrac{82}{9} }$