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Simplifying F(x) = 3cos2x + 8cosx + -3 Multiply F * x xF = 3cos2x + 8cosx + -3 Reorder the terms: xF = -3 + 8cosx + 3cos2x Solving xF = -3 + 8cosx + 3cos2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8cosx' to each side of the equation. -8cosx + xF = -3 + 8cosx + -8cosx + 3cos2x Combine like terms: 8cosx + -8cosx = 0 -8cosx + xF = -3 + 0 + 3cos2x -8cosx + xF = -3 + 3cos2x Add '-3cos2x' to each side of the equation. -8cosx + -3cos2x + xF = -3 + 3cos2x + -3cos2x Combine like terms: 3cos2x + -3cos2x = 0 -8cosx + -3cos2x + xF = -3 + 0 -8cosx + -3cos2x + xF = -3 Reorder the terms: 3 + -8cosx + -3cos2x + xF = -3 + 3 Combine like terms: -3 + 3 = 0 3 + -8cosx + -3cos2x + xF = 0 The solution to this equation could not be determined.
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