the sum of the first n terms of AP is given by Sn=2nsquare =+3n. find 20th term
Answers
Answered by
1
a20=s20-s19
therefore, by subbing 20 and 19 in place of n in the equation 2nsquare+3n
we get
s20=860
s19=779
so 860-779=81
therefore a20=81
pls mark as brainliest
therefore, by subbing 20 and 19 in place of n in the equation 2nsquare+3n
we get
s20=860
s19=779
so 860-779=81
therefore a20=81
pls mark as brainliest
Similar questions