Question: Define the function f(x) = ∫[0 to x] (2t + 4) dt. Evaluate f(3).
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Math question: Determine the conditions for congruence of triangles. Explain when three pairs of corresponding sides are congruent and when two corresponding sides and their included angle are congruent.
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Math question: What are the solutions to the equation x^n + y^n = z^n for n > 2, given that x, y, z are positive integers?