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Working with Vieta's formula

  1. Jul 18, 2016 #1
    1. The problem statement, all variables and given/known data
    math.png
    Part (b)

    2. Relevant equations
    Vieta's formula

    3. The attempt at a solution

    Part (a):
    test.png

    I'm kinda stuck on part (b) - I tried multiplying the product of roots and got b^2 d^2, but I have no idea on dealing with the sum of roots.
     
  2. jcsd
  3. Jul 18, 2016 #2

    ehild

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    Gold Member

    It would be easier using the quadratic formula instead of Vieta's ones for proving b).
     
  4. Jul 18, 2016 #3
    Thanks for the hint - I managed to work this problem out. :smile:
     
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