Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (((2•(x2))+(4x-(2•3x2)))+9)-(6x+3)
 Step  2  :

Equation at the end of step  2  :

  ((2x2 +  (4x - 6x2)) +  9) -  (6x + 3)

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   -4x² - 2x + 6  =   -2 • (2x² + x - 3) 

Trying to factor by splitting the middle term

 4.2     Factoring  2x² + x - 3 

The first term is,  2x²  its coefficient is  2 .
The middle term is,  +x  its coefficient is  1 .
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   1 .

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

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

Final result :

  -2 • (x - 1) • (2x + 3)