Question

Sn=2n^2+1 find the third term​

Answer 1

Answer:

19

Step-by-step explanation:

Sₙ = 2n² + 1

S₃ = (2*3²) + 1

S₃ = (2*9) + 1

S₃ = 18 + 1

S₃ = 19

Hence the third term is 19.

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