What is the vertex form of a quadratic function with vertex (-2, 5), a focus at (-2, 3), and a directrix y = 7?
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Math question: What is the maximum value of the function f(x) = 3x^2 - 2x + 5 in the interval [0, 5]?
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Question: In triangle ABC, the angle bisector of angle B divides side AC into segments AD and DC. If AD = 6x - 8 and DC = 4x + 10, find the value of x.