Solution - Simplification or other simple results

Step  1  :

 1.1     15 = 3•5

(15)² = (3•5)² = 3² • 5²

Equation at the end of step  1  :

   1
  —— • (32•52)
  22

Step  2  :

             1
 Simplify   ——
            22

Equation at the end of step  2  :

   1
  —— • (32•52)
  22

Step  3  :

Final result :

  225            
  ——— = 10.22727 
  22