What is the area of a regular hexagon with side length 8?
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What is the equation of an ellipse in standard form, if the major axis is vertical, the center is at (3, -2), the length of major axis is 10, and the length of minor axis is 8?
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Question: Find the 3rd derivative of f(x) = 3x^4 - 2x^3 + 5x^2 - 6x + 1.