Verify that the numbers given alongside of the cubic polynomial below are their zeroes. Also verify the relationship between the zeroes and the coefficients in each case: x³ – 4x² + 5x – 2; 2, 1, 1

Cubic polynomials can have one, two, three, or no real zeros (roots), depending on the values of the constants a, b, c, and d. For example, the cubic polynomial x³ + 2x² – 4x + 4 has one real zero (2), while the cubic polynomial x³ – 2x² + x – 1 has no real zeros.

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