Solution - Simplification or other simple results

Step  1  :

 1.1     10 = 2•5

(10)¹¹ = (2•5)¹¹ = 2¹¹ • 5¹¹

Equation at the end of step  1  :

  9 • (211•511)

Step  2  :

Final result :

  (32•211•511)