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Simplifying cos2x + -1cosx + -30 = 0 Reorder the terms: -30 + -1cosx + cos2x = 0 Solving -30 + -1cosx + cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '30' to each side of the equation. -30 + -1cosx + 30 + cos2x = 0 + 30 Reorder the terms: -30 + 30 + -1cosx + cos2x = 0 + 30 Combine like terms: -30 + 30 = 0 0 + -1cosx + cos2x = 0 + 30 -1cosx + cos2x = 0 + 30 Combine like terms: 0 + 30 = 30 -1cosx + cos2x = 30 Reorder the terms: -30 + -1cosx + cos2x = 30 + -30 Combine like terms: 30 + -30 = 0 -30 + -1cosx + cos2x = 0 The solution to this equation could not be determined.
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