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[" 11.Let "a,b,c in R." If "f(x)=ax^(2)+...

[" 11.Let "a,b,c in R." If "f(x)=ax^(2)+bx+c" is such that "a+b+c],[=3" and "f(x+y)=f(x)+f(y)+xy,AA x,y in R," then "sum_(n=1)^(10)f(n)],[" is equal to "],[[" (a) "255," (b) "330],[" (c) "165," (d) "190]]

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