Math, asked by shanshazz476, 2 months ago

3. The sum of first n terms of an arithmetic sequence is n2

+2n.

a) What is the first term.

b) Find common difference
c) What is the sum of first 20 terms of this sequence?

Answers

Answered by devenderjoshi92313

0

Answer:

i2i2b2ib22

bwlbwlw

Step-by-step explanation:

hwiwbiwbwkjwownowh2i

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