The Total solution for NCERT class 6-12
Find the sum to┬аn┬аterms of the series┬а52┬а+62┬а+ 72┬а+ тАж + 202
Given series is 52┬а+62┬а+ 72┬а+ тАж + 202
ItтАЩs seen that,
nth┬аterm,┬аan┬а= (┬аn┬а+4)2┬а=┬аn2┬а+ 8n┬а+ 16
Then, the sum of nterms of the series can be expressed as