Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  ((0 -  2x2) -  7x) -  3

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   -2x² - 7x - 3  =   -1 • (2x² + 7x + 3) 

Trying to factor by splitting the middle term

 3.2     Factoring  2x² + 7x + 3 

The first term is,  2x²  its coefficient is  2 .
The middle term is,  +7x  its coefficient is  7 .
The last term, "the constant", is  +3 

Step-1 : Multiply the coefficient of the first term by the constant   2 • 3 = 6 

Step-2 : Find two factors of  6  whose sum equals the coefficient of the middle term, which is   7 .

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  1  and  6 
                     2x² + 1x + 6x + 3

Step-4 : Add up the first 2 terms, pulling out like factors :
                    x • (2x+1)
              Add up the last 2 terms, pulling out common factors :
                    3 • (2x+1)
Step-5 : Add up the four terms of step 4 :
                    (x+3)  •  (2x+1)
             Which is the desired factorization

Final result :

  (-2x - 1) • (x + 3)