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Simplifying 5cos2x + 4cosx + -12 = 0 Reorder the terms: -12 + 4cosx + 5cos2x = 0 Solving -12 + 4cosx + 5cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 4cosx + 12 + 5cos2x = 0 + 12 Reorder the terms: -12 + 12 + 4cosx + 5cos2x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + 4cosx + 5cos2x = 0 + 12 4cosx + 5cos2x = 0 + 12 Combine like terms: 0 + 12 = 12 4cosx + 5cos2x = 12 Reorder the terms: -12 + 4cosx + 5cos2x = 12 + -12 Combine like terms: 12 + -12 = 0 -12 + 4cosx + 5cos2x = 0 The solution to this equation could not be determined.
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