The sum of first ' \( n \) ' terms of the series
\( 1^{2}+2.2^{2}+2.3^{2}+2.4^{2}+\ldots \ldots .... VIDEO
The sum of first ' \( n \) ' terms of the serieshttps://bit.ly/YTAI_PWAP https://www.pw.live
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