What is the equation of an exponential function that passes through the points (2, 5) and (4, 20)?
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What is the measure of angle A in a triangle if a = 9, b = 12, and c = 15?
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Math question: What is the smallest positive integer solution for x, y, and z in the equation x^n + y^n = z^n, where n > 2 according to Fermat's Theorem?