Respuesta :

Answer : X^2+6x+9
(X+3)(x+3)

Answer:

X = -3

Step-by-step explanation:

(X + 3) ( X + 3)

(x^2+3x)+(3x+9)

X(X+3) + 3(X+3)

(X+3)(X+3)

X+3= 0

X = -3