The Total solution for NCERT class 6-12
Find the sum to n terms of the series 52 +62 + 72 + … + 202
Given series is 52 +62 + 72 + … + 202
It’s seen that,
nth term, an = ( n +4)2 = n2 + 8n + 16
Then, the sum of nterms of the series can be expressed as