Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "x8"   was replaced by   "x^8". 

Step  1  :

Equation at the end of step  1  :

  (4 • (x2)) -  (22•32x81)
 Step  2  :

Equation at the end of step  2  :

  22x2 -  (22•32x81)

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   4x² - 36x⁸¹  =   -4x² • (9x⁷⁹ - 1) 

Final result :

  -4x2 • (9x79 - 1)