Answer:
it might be −2⋅(x+1)⋅(x−2)
Step-by-step explanation:
(1): "x2"   was replaced by   "x^2". 
(6 - 7x) -  2x2) +  9x) -  2
Pull out like factors :
 -2x2 + 2x + 4  =   -2 • (x2 - x - 2) 
Factoring  x2 - x - 2 
The first term is,  x2  its coefficient is  1 .
The middle term is,  -x  its coefficient is  -1 .
The last term, "the constant", is  -2 
Step-1 : Multiply the coefficient of the first term by the constant   1 • -2 = -2 
Step-2 : Find two factors of  -2  whose sum equals the coefficient of the middle term, which is   -1 .
      -2    +    1    =    -1    That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -2  and  1 
                     x2 - 2x + 1x - 2
Step-4 : Add up the first 2 terms, pulling out like factors :
                    x • (x-2)
              Add up the last 2 terms, pulling out common factors :
                     1 • (x-2)
Step-5 : Add up the four terms of step 4 :
                    (x+1)  •  (x-2)
             Which is the desired factorization