Math question: What is the equation of the quadratic function whose graph opens upward, with the vertex at (1, 2) and passing through the point (3, 5)?
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What is the length of side AB in a triangle with side AC = 10, side BC = 8, and angle B = 35°?
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Question: Find the limit of f(x) = √(x² + 5) as x approaches 3.