You have the following expression:
(1/3)² + 3²
in order to simplify the prevous expression, consider that 3² = 3x3 = 9 and by properties of exponents (1/3)² = 1²/3². Then, you have:
(1/3)² + 3² = 1²/3² + 9
= 1/9 + 9
= (9 + 9)/81
= 18/81 = 2/9
Hence, the simplified expression is 2/9