Question

3²+7²+11²........upto n terms??

Answer 1

$\huge\sf\red{AnSwEr}$

$\huge{3²+7²+11²}$

$\huge{=> 21²}$

Answer 2

$\huge\sf\red{AnSwEr}$

${3}^{2} + {7}^{2} + {11}^{2}$
$= {21}^{2}$