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aceace

  • 3 years ago

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

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

  2. mukushla
    • 3 years ago
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    now use the formula for sum and product of roots

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

  4. mukushla
    • 3 years ago
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    let me solve and check

  5. mukushla
    • 3 years ago
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    exactly :)

  6. aceace
    • 3 years ago
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    thank you !

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