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Complete the square 2x^2-206=-20x

Complete the square 2x^2-206=-20x
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Complete the square

2x^2-206=-20x

User Kientux
by
7.8k points

2 Answers

11 votes

Answer: Here ya go! I hope this helps you out!

Complete the square 2x^2-206=-20x-example-1
User Remco Eissing
by
7.6k points
9 votes

Answer:

  • x = - 5 ± 8√2

Explanation:

  • 2x² - 206 = -20x
  • x² - 103 = -10x
  • x² + 10x = 103
  • x² + 2*5x + 5² = 103 + 25
  • (x + 5)² = 128
  • √(x + 5)² = √128
  • x + 5 = ± 8√2
  • x = - 5 ± 8√2
User Mallardz
by
8.5k points
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