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QuestionLet f(x) = x 3 x 2 + x + 39. (a) Show that 3 is a ro

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QuestionLet f(x) = x 3 x 2 + x + 39. (a) Show that 3 is a root of f(x). (1… Let f(x) = x 3 – x 2 + x + 39. (a) Show that -3 is a root of f(x). (1 mark) (b) Find all of the roots of f(x). (2 marks) (c) Let a, ? and ? be the roots of f(x), where a ? R. Show that ?+ ? = 4, ? = 13MathCalculus

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