Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (0 -  (522 • -5)) -  15

Step  2  :

Multiplying exponents :

 2.1    5²²  multiplied by  5¹   = 5^{(22 + 1)} = 5²³

Equation at the end of step  2  :

  (0 -   -523) -  15

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   5²³ - 15  =   5 • (1 - 3) 

Final result :

  5 • (1 - 3)