Solution - Other Factorizations

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "b2"   was replaced by   "b^2". 

Step  1  :

Trying to factor as a Difference of Squares :

 1.1      Factoring:  b²-9 

Theory : A difference of two perfect squares,  A² - B²  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =
         A² - AB + BA - B² =
         A² - AB + AB - B² =
         A² - B²

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 9 is the square of 3
Check :  b²  is the square of  b¹ 

Factorization is :       (b + 3)  •  (b - 3) 

Final result :

  (b + 3) • (b - 3)