Find the fourth-degree polynomial function with zeros 1, - 1, i, and -i. Write the function in factored form. f(x) =| (Simplify your answer. Type your answer in factored form. Type an expression using...

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Extracted text: Find the fourth-degree polynomial function with zeros 1, - 1, i, and -i. Write the function in factored form. f(x) =| (Simplify your answer. Type your answer in factored form. Type an expression using x as the variable. Express complex numbers in terms of i.) Enter your answer in the answer box.