What is the value of (2^3) * (√25) - (4^2) + (7^2) - (√64)?
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Math question: Given that sin(x) = 0.6, find the value of cos(x).
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The equation of an ellipse is (x-h)^2/a^2 + (y-k)^2/b^2 = 1. Find the characteristics of an ellipse with center (2,-3) and semi-major axis 5, semi-minor axis 3.