Math, asked by SuyogPuma, 2 months ago

If the sum of n terms of an arithmetic series is,S=2n square+6n,find its common difference?

Answers

Answered by mundrakol

1

Step-by-step explanation:

S = 2n²+6n

2n²+6n = n/2 (a+(n-1)d)

4n+12 = a + (n-1) d

d = 4n+12-a / n-1

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