Explicación paso a paso:
Suma de Números cuadrados = n(n+1)(2n+1)/6
n = 15
Y n = 4
15(16)(31)/6.- 4(5)(9)/6
1240 - 30
= 1210
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Explicación paso a paso:
Suma de Números cuadrados = n(n+1)(2n+1)/6
n = 15
Y n = 4
15(16)(31)/6.- 4(5)(9)/6
1240 - 30
= 1210