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2. Solve x2 + 2x + 7 = 0 using the Quadratic Formula​
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39 votes
39 votes
2. Solve x2 + 2x + 7 = 0 using the Quadratic Formula​

User Eddie Lopez
by
2.6k points

1 Answer

21 votes
21 votes

Answer:

  • -1 ± i√7

Explanation:

  • x² + 2x + 7 = 0
  • D = 2² - 4*7 = 4 - 56 = -52
  • x = (-2 ± √-28)/2 = (-2 ± 2√-7)/2 = -1 ± i√7
User Kosuke Ogawa
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