Math question: Find the limit as x approaches 3 of (2x^2 - 4x + 5) / (x^2 - 9).
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What is the length of the altitude of a triangle with sides of 8, 15, and 17 units?
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What is the resulting vector when multiplying vector A of magnitude 5 by vector B of magnitude 7, given that they are oriented at an angle of 60 degrees to each other?