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aceace

Solve the equation x^(3) - 12^(2) +39x -28 = 0 if the roots are in arithmetic progression.

  • one year ago
  • one year ago

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  1. mukushla
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    let the roots be \(a-b\) , \(a\) and \(a+b\) since they are in AP

    • one year ago
  2. mukushla
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    now use the formula for sum and product of roots

    • one year ago
  3. aceace
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    ahhh i think i have the right answer... is it 1, 4, and 7

    • one year ago
  4. mukushla
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    let me solve and check

    • one year ago
  5. mukushla
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    exactly :)

    • one year ago
  6. aceace
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    thank you !

    • one year ago
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