Respuesta :

Answer:

b = -4, 0

Step-by-step explanation:

Given :

  • b² + 4b = 0

Take b as a common factor.

  • b(b + 4) = 0

Solutions

  • b = 0
  • b + 4 = 0 ⇒ b = -4
  • b = -4, 0

Answer:

b = - 4, b = 0

Step-by-step explanation:

b² + 4b = 0 ← factor out b from each term

b(b + 4) = 0

equate each factor to zero and solve for b

b = 0

b + 4 = 0 ⇒ b = - 4