Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-2" was replaced by "^(-2)".

Step  1  :

Equation at the end of step  1  :

  0 -  (2)(-2)

Step  2  :

Final result :

  -1            
  —— = -0.25000 
  22