Solution - Power equations

Step  1  :

 1.1     243 = 35

(243)² = (3⁵)² = 3¹⁰

Equation at the end of step  1  :

Step  2  :

            310
 Simplify   ———
             3 

Dividing exponents :

 2.1    3¹⁰   divided by   3¹   = 3^{(10 - 1)} = 3⁹

Final result :

  39