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0 votes
44.1k views
in Mathematics by (52.5k points)

If α and β be the coefficients of x4 and x2 respectively in the expansion of (x + (x2 - 1))6 + (x - (x2 - 1))6, then

(1) α  + β = 60

(2) α + β = - 30

(3) α - β = - 132

(4) α - β = 60

2 Answers

+3 votes
by (58.3k points)
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Best answer

Answer is (3) α - β = - 132

+1 vote
by (54.8k points)

Answer is (3) α - β = - 132

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