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The sum to n terms of the series 1+ 5 ((...

The sum to n terms of the series `1+ 5 ((4n +1)/(4n - 3)) + 9 ((4n +1) /( 4n -3)) ^(2) + 13 ((4n +1)/( 4n -3)) ^(3) + ((4n + 1 )/( 4n -3)) ^(2)+ …….` is .

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The correct Answer is:
`4n^(2)-3n`
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