CBSE Class 12-science Answered
binomial theorem
Asked by coolameet08 | 10 Feb, 2010, 10:26: AM
Expert Answer
The second term coefficient in the expasion, is 2n.
The third term coefficient, (2n)(2n-1)/2.
The fourth term coefficient, (2n)(2n-1)(2n-2)/6
fourth term - third term = common difference = third term - second term
(2n)(2n-1)(2n-2)/6 - (2n)(2n-1)/2 = (2n)(2n-1)/2 - 2n
(2n)(2n-1)(2(2n-2)-6)/12 = 2n(2n-1-2)/2
(2n-1)(4n-10)/6 = (2n-3)
(2n-1)(4n-10) - 12n + 18 = 0
8n2 - 24n + 10 - 12n + 18 = 0
8n2 - 36n + 28 = 0
2n2 - 9n + 7 = 0
Regards,
Team,
TopperLearning.
Answered by | 14 Feb, 2010, 06:29: AM
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