Question

me ajude prfv 3^2+3^-2?

Answer 1

3^2 = 9
3^-2 = 1/3^2       
9/1 + 1/3^2 = 9/1 + 1/9 = 9/9 = 1

Answer 2

$3^{2} + 3^{ - 2} = \\ \\ 9 + \frac{1}{3^{2} } = \\ \\ 9 + \frac{1}{9} = \\ \\ \frac{81 + 1}{9} = \\ \\ \frac{82}{9}$