Question: What is the derivative of f(x) = 3x^4 - 2x^3 + 5x^2 - 9x + 1 with respect to x?
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What is the value of x in the quadratic equation: 2x² + 5x - 3 = 0?
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Math question: In a triangle, with angle A measuring 50 degrees, side a measuring 8 units, and side b measuring 10 units, find the measure of angle B using the sine law.