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joja [24]
2 years ago
7

21. The​ solution(s) is/are b =Please help me solve this

Mathematics
2 answers:
Reil [10]2 years ago
6 0

Answer:

<u>b = -4, 0</u>

Step-by-step explanation:

<u>Given</u> :

  • b² + 4b = 0

<u>Take b as a common factor.</u>

  • b(b + 4) = 0

<u>Solutions</u>

  • b = 0
  • b + 4 = 0 ⇒ b = -4
  • <u>b = -4, 0</u>
worty [1.4K]2 years ago
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

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