If sn is the sum of the first n terms of an
a.p is given by sn=5n^2+3n ,then find its n^th term
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a=8;
s2=26;
t2=26-8=18;
d=18-8=10
by tn;
tn=a+(n-1)*d
=10n-2
s2=26;
t2=26-8=18;
d=18-8=10
by tn;
tn=a+(n-1)*d
=10n-2
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