Question: Determine the extreme values of the function f(x) = 2x^3 - 3x^2 + 4x - 5 on the interval [0, 5].
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Math question: Given triangle ABC, angle bisector BD intersects side AC at point D. If angle B is 50 degrees and angle C is 80 degrees, find the measure of angle A. (
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Question: Simplify β(75) + β(27) - β(32). Is the result rational or irrational?