Question: Let f ( x ) = x 3 + 3 x + 2 . ( a ) Explain why f ( x ) has exactly

Let f(x)=x3+3x+2.
(a) Explain why f(x) has exactly one real root.
(b) Explain why this root is not rational.
(b) Use Cardano's method to find the real root off(x).
Let f ( x ) = x 3 + 3 x + 2 . ( a ) Explain why f

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