Ola Fernanda
olhe a resposta de wolframalpha http://www.wolframalpha.com/input/?i=P%28x%29+%3D+...
P(x) = P(x - 1) + x²
P(x) = x*(x + 1)*(2x + 1)/6 + C
pronto
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Ola Fernanda
olhe a resposta de wolframalpha http://www.wolframalpha.com/input/?i=P%28x%29+%3D+...
P(x) = P(x - 1) + x²
P(x) = x*(x + 1)*(2x + 1)/6 + C
pronto