Just tell me the answer with the explanation.... (i'll give u a medal...) ..and fan u...

What number should be added to the expression x2 + 6x to change it into a perfect square trinomial?

A.

3

B.

6

C.

9

D.

12

Question

Just tell me the answer with the explanation.... (i'll give u a medal...) ..and fan u...

What number should be added to the expression x2 + 6x to change it into a perfect square trinomial?
  
 
 

 
 

  

  A. 
 
3
   
   

 
 

  

  B. 
 
6
   
   

 
 

  

  C. 
 
9
   
   

 
 

  

  D. 
 
12

johnweldon1993 · Answer

Take half the coefficient of the 'x' and square the result

6x  ...half of 6 is 3...and 3^2 = 9   so you add 9

anonymous · Answer

oh okay !!! @johnweldon1993