Solution - Simplification or other simple results

Step  1  :

 1.1     9 = 32

(9)² = (3²)² = 3⁴

Equation at the end of step  1  :

Step  2  :

 2.1     9 = 32

(9)⁴ = (3²)⁴ = 3⁸

Equation at the end of step  2  :

Step  3  :

Equation at the end of step  3  :

Step  4  :

Equation at the end of step  4  :

Step  5  :

            -9
 Simplify   ——
            10

Final result :

  -9            
  —— = -0.90000 
  10