Question: The function f is defined as f (x)=(x 4i )(x +4i )(x 7)(x +3)(x 2). How many real and non-real roots does f have?

The function f is defined as f (x)=(x 4i )(x +4i )(x 7)(x +3)(x 2). How many real and non-real roots does f have?

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