Question: What is the domain of the trigonometric function f(x) = sin(x) + 2cos(x) in radians? (
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What is the probability that out of 10 randomly selected students, exactly 3 have blue eyes, given that the probability of a student having blue eyes is 0.25?
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What is the quadratic formula, given an equation of the form ax^2 + bx + c = 0?