What is the smallest value of n in Fermat's Last Theorem where there are no positive integer solutions for x, y, and z in the equation x^n + y^n = z^n?
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Math question: If log base 2 of x equals 4, find the value of x^2 + log base 2 of (x^2 - 16) - 2log base 2 of (x + 4).
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Question: What is the maximum value of the function f(x) = x^3 - 6x^2 + 9x on the closed interval [0, 3]?