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Let A=[3x^2 1 6x],B=[abc],a n dC=[(x+2)^...

Let `A=[3x^2 1 6x],B=[abc],a n dC=[(x+2)^2 5x^2 2x5x^2 2x(x+2)^2 2x(x+2)^2 5x^2]` be three given matrices, where `a ,b ,ca n dx in Rdot` Given that `f(x)=a x^2+b x+c ,` then the value of `f(I)` is ______.

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