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if f(x)=|[x-3,2x^2-18,3x^3-81],[x-5,2x^2...

if `f(x)=|[x-3,2x^2-18,3x^3-81],[x-5,2x^2-50,4x^3-500],[1,2,3]|` then `f(1)f(3)+f(3)f(5)+f(5)f(1)` is equalto

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