Math, asked by sandeep6836, 9 months ago

answer this question please

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Answered by rani49035

0

Answer:

Sn =3n² + 5

a3 = S3 - S2

a3 = 3(3)² - 5 -(3(2)² - 5)

a3 = 27 -5 -12 +5

a3 = 15

so the thiRd term is 15

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