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Find the remaining roots of f(x) given that r is a root . Then rewrite f(x) in a factored form and sketch its graph. f(x) = 3x^4 + 10x^3 + 3x^2 – 12x – 4; r = -2 is a double root . Identify all the remaining roots. X = (Simplify your answer. Use a comma to seperate answers as needed) Write the completely factored form of f(x). f(x) = ….. Sketch the graph of f(x).