Solution - Simplification or other simple results

Step  1  :

 1.1     26 = 2•13

(26)² = (2•13)² = 2² • 13²

Equation at the end of step  1  :

  (0 -  (5(2^2•13^2)))2

Step  2  :

Equation at the end of step  2  :

  (0 -  5676)2

Step  3  :

Final result :

  51352