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If α and β are the roots of the quadratic equation 3 x2  + 8 x + 2 = 0, then α3 + β3  =
  • a)
    − 368/27
  • b)
    368/27
  • c)
    − 364/27
  • d)
    364/27
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
If α and β are the roots of the quadratic equation 3 x2 + 8...
α + β = − 8/3 ; α β = 2/3
use : α3 + β3 = (α +β)3 − 3αβ (α + β)
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If α and β are the roots of the quadratic equation 3 x2 + 8 x + 2 = 0, then α3+ β3=a)− 368/27b)368/27c)− 364/27d)364/27Correct answer is option 'A'. Can you explain this answer?
Question Description
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