Solution - Simplification or other simple results

Step  1  :

Trying to factor by splitting the middle term

 1.1     Factoring  b²-2b-35 

The first term is,  b²  its coefficient is  1 .
The middle term is,  -2b  its coefficient is  -2 .
The last term, "the constant", is  -35 

Step-1 : Multiply the coefficient of the first term by the constant   1 • -35 = -35 

Step-2 : Find two factors of  -35  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,  -7  and  5 
                     b² - 7b + 5b - 35

Step-4 : Add up the first 2 terms, pulling out like factors :
                    b • (b-7)
              Add up the last 2 terms, pulling out common factors :
                    5 • (b-7)
Step-5 : Add up the four terms of step 4 :
                    (b+5)  •  (b-7)
             Which is the desired factorization

Final result :

  (b + 5) • (b - 7)