What is the vertex form equation of a parabola with a vertex at (-2, 4)?
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Math Question: Find the absolute extrema of the function f(x) = x^3 - 3x^2 + 2x on the interval [-1, 2].
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Math question: If triangle ABC is congruent to triangle XYZ, what properties or characteristics must be true for the triangles to be considered congruent?