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Solve 2x^2-4x-18=0 by completing the square. round the solutions to the nearest hundredth

Solve 2x^2-4x-18=0 by completing the square. round the solutions to the nearest hundredth
asked 225k views
1 vote
Solve 2x^2-4x-18=0 by completing the square. round the solutions to the nearest hundredth

asked
User Hank Chan
by
7.6k points

1 Answer

4 votes

Answer:

1-√10

1+√10

Explanation:

  • 2x^2-4x-18=0
  • x^2-2x-9=0
  • x^2-2x+1-10=0
  • (x-1)^2-10=0
  • (x-1+√10)(x-1-√10)=0
  • x=1-√10
  • x=1+√10
answered
User FluxLemur
by
8.2k points
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