if the sum of p terms of a series is 3p^2+5p, prove that the terms of the series form an AP.

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Sp=3p2 +5p If p=1 Sp=t1 t1=3+5=8 If p=2 Sp=t2 t1+t2=12+10=22 To find t2 t1+t2=22 8+t2=22 t2=14 If p=3 Sp=t3 t1+t2+t3=27+15=42 To find t3 t1+t2+t3=42 22+t3=42 t3=20 I think this will help you
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