the sum of n terms of an Ap is 3n2+5n find the Ap hence find its 10th term
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Answer:
answer is 62
Step-by-step explanation:
sum of first term S1=a1=3(1)^2+5(1)=8
sum of two terms =a1+a2=3(2)^2+5(2)=22
8+a2=22
a2=14
d=a2-a1=14-8=6
a10=a1+9d=8+9(6)=8+54=62
HOPE THIS MAY HELP YOU
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