What is the slope of a line passing through the points (2, 5) and (6, 9)?
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Math question: Find the 5th derivative of f(x) = 2x^4 + 3x^2 - 5x + 7.
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Question: In triangle ABC, the angle bisector of angle B divides the opposite side AC into segments of length 4cm and 6cm. What is the length of side BC?