SOLUTION: what is the missing number of this perfect square equation: p^2+9p+?

Algebra ->  Equations -> SOLUTION: what is the missing number of this perfect square equation: p^2+9p+?      Log On


   

Question 846174: what is the missing number of this perfect square equation: p^2+9p+?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Take half of the x coefficient and square it.
p%5E2%2B9p%2B%289%2F2%29%5E2=p%5E2%2B9p%2B81%2F4=%28p%2B9%2F2%29%5E2