Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (3c2 +  2c) -  16

Step  2  :

Trying to factor by splitting the middle term

 2.1     Factoring  3c²+2c-16 

The first term is,  3c²  its coefficient is  3 .
The middle term is,  +2c  its coefficient is  2 .
The last term, "the constant", is  -16 

Step-1 : Multiply the coefficient of the first term by the constant   3 • -16 = -48 

Step-2 : Find two factors of  -48  whose sum equals the coefficient of the middle term, which is   2 .

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -6  and  8 
                     3c² - 6c + 8c - 16

Step-4 : Add up the first 2 terms, pulling out like factors :
                    3c • (c-2)
              Add up the last 2 terms, pulling out common factors :
                    8 • (c-2)
Step-5 : Add up the four terms of step 4 :
                    (3c+8)  •  (c-2)
             Which is the desired factorization

Final result :

  (c - 2) • (3c + 8)