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Can someone help me 5b^2+4=10b
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14 votes
14 votes
Can someone help me

5b^2+4=10b

User Stoatman
by
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1 Answer

29 votes
29 votes

Answer:

b = 5 ± √5 / 5

Explanation:

Given :

  • 5b² + 4 = 10b

Subtract 10b from both sides :

  • 5b² - 10b + 4 = 10b - 10b
  • 5b² - 10b + 4 = 0

Splitting the middle term :

  • b = 10 ± √100 - 4(5)(4) / 10
  • b = 10 ± √20 / 10
  • b = 10 ± 2√5 / 10
  • b = 5 ± √5 / 5
User TeTeT
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