anonymous
  • anonymous
Solve the equation x^(3) - 12^(2) +39x -28 = 0 if the roots are in arithmetic progression.
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
let the roots be \(a-b\) , \(a\) and \(a+b\) since they are in AP
anonymous
  • anonymous
now use the formula for sum and product of roots
anonymous
  • anonymous
ahhh i think i have the right answer... is it 1, 4, and 7

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anonymous
  • anonymous
let me solve and check
anonymous
  • anonymous
exactly :)
anonymous
  • anonymous
thank you !

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