Pregunta: Demuestra que 12+32+52+…+(2n+1)2=(n+1) (2n+1)(2n+3)/3 para todo n entero no negativo.

We are given the following statement:

$1^2+3^2+5^2+\dots +{(2\mathrm{n}+1)}^2=\frac{(\mathrm{n}+1)(2\mathrm{n}+1)(2\mathrm{n}+3)}{3}$ for every non-negative integer.

Say, we have the following stat...