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  :

  ((0 -  (52)) +  (22•32))2

Step  2  :

Equation at the end of step  2  :

  ((0 -  52) +  (22•32))2

Step  3  :

Final result :

  112