Math question: In ABC and DEF, if AB = DE, BC = EF, and ∠B = ∠E, what can be concluded about the two triangles?
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What is the the derivative of f(x) = 3x^2 + 2x - 1?
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What is the median of a set of seven numbers if the sum of the smallest and largest numbers is 30 and the sum of the second smallest and second largest numbers is 28?