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Simplifying 2cos2x + 9cosx + -14 = 0 Reorder the terms: -14 + 9cosx + 2cos2x = 0 Solving -14 + 9cosx + 2cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 9cosx + 14 + 2cos2x = 0 + 14 Reorder the terms: -14 + 14 + 9cosx + 2cos2x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 9cosx + 2cos2x = 0 + 14 9cosx + 2cos2x = 0 + 14 Combine like terms: 0 + 14 = 14 9cosx + 2cos2x = 14 Reorder the terms: -14 + 9cosx + 2cos2x = 14 + -14 Combine like terms: 14 + -14 = 0 -14 + 9cosx + 2cos2x = 0 The solution to this equation could not be determined.
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