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If the sum of first m term of an AP is 2msquare+3m then what is its second term?

Posted by Romal Shahare 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anjali Mishra?? 6 years, 10 months ago

Given:Sm=2m^2+3m Tm=Sm-Sm-1 Tm=2m^2+3m-2(m-1)^2+3(m-1) Tm=2m^2+3m-2m^2-2+4m+3m-3 Tm=10m-5 T2=10(2)-5 T2=15

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CBSE > Class 10 > Mathematics