Math, asked by yashviyadav, 1 year ago

the sum of first n terms of an AP is given by Sn = 2n square + 3n . find the sixteenth term of the AP

Answers

Answered by Millii
4
hope this helps u...
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Answered by digi18
4
S1 = 2 (1)^2 + 3 (1) = 5

S16 = 2 (16)^2 + 3 (16) = 560

Sn = n/2 (A + L)

S16 = 16/2( 5 + L)
560 = 40 + 8L

520 = 8L

65 = L

16th tern is 65
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