Solution - Power equations

Step  1  :

 1.1     9 = 32

(9)² = (3²)² = 3⁴

Equation at the end of step  1  :

  
 Step  2  :
            34
 Simplify   ——
            3 

Dividing exponents :

 2.1    3⁴   divided by   3¹   = 3^{(4 - 1)} = 3³

Final result :

  27