Math question: What is the equation of a circle with center (3, 4) and radius 5?
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Question: What is the resultant vector when a vector with magnitude 5 and direction 30 degrees is added to a vector with magnitude 3 and direction 150 degrees?
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What is the limit of (3x^2 + 2x - 1)/(x^2 - 1) as x approaches 1?