To solve this problem you must apply the proccedure shown below:
 1. You have the following quadratic equation given in the problem above:
 

 2. You must factor out the greatest common factor, which is: 
 :
:
 

 3. It has the form of a Perfect square trinomial 
 then, you can write it as
 then, you can write it as 
 , where
 , where 
 .
.
 4. Therefore, you have that the answer is:
 
