Completing the square method is used to rewrite quadratic equations to vertex form, aiding in finding the vertex of a parabola.
Completing the square is a technique used to rewrite quadratic expressions, equations, or functions from standard form to vertex form. This method involves manipulating the equation to create a perfect square trinomial, which helps find the vertex of a parabola.
For example, for the quadratic equation y = x^2 + 4x + 4, completing the square results in y = (x + 2)^2. This form allows for easier identification of the vertex (h, k) of the parabolic graph.
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