Question: Solve the cubic equation P(x) = x^3 - 3x^2 + x + 2. How many real roots does it have?
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Math Question: Solve log base 3 of (2x + 5) = 4 for x.
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What is the result of multiplying vector A with a magnitude of 3 and vector B with magnitude 5, if they are perpendicular to each other considering dot product?