設f(x)=x²-2x 5，g(x)=a(x-1)(x-2) b(x-2)(x-3) c(x-5)(x-1), 若不論x為任意實數,恆使f(x)=g(x),則…

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AH-000001 · Answer

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設f(x)=x²-2x 5，g(x)=a(x-1)(x-2) b(x-2)(x-3) c(x-5)(x-1), 若不論x為任意實數,恆使f(x)=g(x),則a b c= (A)-2 (B)2 (C)-1 (D)1