if Alpha denotes the sum of first 8 terms of an ap find S3 or minus Alpha minus one
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Sum of 8 terms = 4 (2a+ 7d) = alpha
here a is first term and d is common difference of an ap.
S(3) = - alpha - 1 = - 8a -28d -1
:)
here a is first term and d is common difference of an ap.
S(3) = - alpha - 1 = - 8a -28d -1
:)
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