Solution - Simplification or other simple results

Step  1  :

 1.1     9 = 32

(9)² = (3²)² = 3⁴

Equation at the end of step  1  :

  (63) +  34

Step  2  :

 2.1     6 = 2•3

(6)³ = (2•3)³ = 2³ • 3³

Equation at the end of step  2  :

  (23•33) +  34

Step  3  :

Final result :

  297