Solution - Simplification or other simple results

Step  1  :

 1.1     6 = 2•3

(6)² = (2•3)² = 2² • 3²

Equation at the end of step  1  :

  (72) +  (22•32)

Step  2  :

Equation at the end of step  2  :

  72 +  (22•32)

Step  3  :

Final result :

  85