Find the solutions to $x^2 + 64 = 4x + 16.$ Enter your answers separated by commas.
Combine like terms: \(x^2 - 4x +48 = 0\)
Quadratic formula: \(x = {4\pm\sqrt{16-4*48}\over2}={4\pm4i\sqrt{11}\over2}=2\pm2\sqrt{11}i\)
So, your answers are \(2 - 2\sqrt{11}i\), \(2 + 2\sqrt{11}i\)
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