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If α and β be the coefficients of x4 and x2 respectively in the expansion of , then
  • a)
    α - β = 60
  • b)
    α + β = 60
  • c)
    α - β = -132
  • d)
    α + β = -30
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If α andβbe the coefficients of x4 and x2 respectively in t...

= 2[32x6 - 48x4 + 18x2 -1]
∴ α = Coefficient of x4 = -96
β = Coefficient of x2 = 36
⇒ α - β = -96 - 36 = -132
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If α andβbe the coefficients of x4 and x2 respectively in the expansion of , thena)α -β = 60b)α +β = 60c)α -β = -132d)α +β = -30Correct answer is option 'C'. Can you explain this answer?
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