Question

21. The​ solution(s) is/are b =

Please help me solve this

Answer 1

b = - 4, b = 0

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

Answer 2

b = -4, 0

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