Explain the problem with same steps given in the solution below the question!
with final result!!!
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Answer:
Given
Sn = 3n² + 5n .....1
Sn-1 means, sum of second last
term
by putting the n-1 in place of n of eq1
Sn-1 = 3n² - n - 2
there's a formula
a ñ = Sn - Sn-1
a ñ = 3n²+ 5n-( 3n²-n-2)
Answered by
1
Answer:
refers to the attachment
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