Math, asked by raniarazi5, 9 months ago

sum of first n terms of an arithametic sequence is 8n^2+5n.
a)find the sum of first 20 terms?
b)write the algebraic expression of the sequence?

friends can you please answer this question by step by step.​

Answers

Answered by suhan03
0

idk wrong answer just for fub

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