What is the limit as x approaches 3 of (x^2 + 2x - 3)/(x - 3)?
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What is the Pythagorean theorem and how is it used to find the length of the hypotenuse in a right triangle?
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What is the length of the perpendicular bisector of a side of a triangle if the side length is 10 units and the other two sides have lengths of 8 and 6 units, respectively?