The polynomial function f ( x ) = x 3 − 3 x 2 + 25 x − 75 has 5 i as a zero. What is the only real zero of f ( x ) ?

Elementary Linear Algebra (MindTap Course List)
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Chapter1: Systems Of Linear Equations
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The polynomial function f ( x ) = x 3 − 3 x 2 + 25 x − 75 has 5 i as a zero.

What is the only real zero of f ( x ) ?

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