MathematicsEasy110×since 2002Q3859Let aaa, b, c ∈R\in R∈R. If fff(x) = ax² + bx + c is such that aaa + b + c = 3 and fff(x + y) = fff(x) + fff(y) + xy, ∀x,y∈R,\forall x,y \in R,∀x,y∈R, then ∑n=110f(n)\sum\limits_{n = 1}^{10} {f(n)}n=1∑10f(n) is equal toA165B190C255D330Check answerSkip