What is the 3rd derivative of f(x) = 2x^3 - 4x^2 + 5x - 1?
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What is the equation of a line passing through (2, 5) and (−3, 1)?
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Math question: How many pairs of congruent triangles can be formed using the rules for congruence, considering triangles with side lengths ranging from 1 to 10 units?