Ответ:
23/6
S(x^2+x)=x^3/3+x^2/2
2^3/3+2^2/2-(1^3/3+1^2/2)=23/6
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Ответ:
23/6
S(x^2+x)=x^3/3+x^2/2
2^3/3+2^2/2-(1^3/3+1^2/2)=23/6