Grade 11Algebra
Find the sum of n terms of A.P. whose rth term is 2r+3
1 Answer
Arun
Tr = 2r +3
Hence
Tn would be = 2n +3
Now
Sim of n terms will be
Sn = 
(2n+3)
= 2 n(n+1)/2 +3n
= n(n+1) + 3n
= n² +4n
Other Related Questions on algebra
How do you write “the product of 18 and q” as an algebraic expression?
How do you write “the product of 18 and q” as an algebraic expression?
algebra
Last Activity: 2 Years ago