Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (22•3k2) -  4k

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   12k² - 4k  =   4k • (3k - 1) 

Final result :

  4k • (3k - 1)