Respuesta :

KurdishPotato

Step-by-step explanation:

x^2 + 13x + 36 = (x+4)(x+9)

x = -4 or x = -9

devishri1977

Answer:

Step-by-step explanation:

x² + 13x + 36= 0

x² + 4x + 9x + (9*4)= 0

x*(x + 4) + 9*(x + 4) = 0

(x+4) (x +9) =0

x + 4 = 0      or  x + 9 = 0

  x = -4         ;            x = -9