Question

calcule:  3²+3-²
me ajudem

Answer 1

$3^{2}+ 3^{-2}=9+ \frac{1 ^{2} }{3}=9+ \frac{1}{9}= \frac{10}{9}$

Answer 2

$3^{2} + 3 ^{-2} \\ \\ 9 + \frac{1}{3} ^{2} \\ \\ 9 + \frac{1}{9} = \boxed{\frac{10}{9} }$