Example 4a: Find the zeros of the function f(x) = x² + 4x + 13 using completing the square to find complex roots.
A slide from a Holt McDougal Algebra 2 textbook showing a step-by-step example of finding the zeros of the quadratic function f(x) = x² + 4x + 13 using the method of completing the square, resulting in complex solutions x = -2 ± 3i.
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