Answer:
Step-by-step explanation:
[tex] {p}^{2} + 6p + 9[/tex]
[tex] = {p}^{2} + 3p + 3p + 9[/tex]
= p(p + 3) + 3(p + 3)
= (p+3)(p+3) (Ans)
(p+3)^2 =0
p=-3
Step-by-step explanat
