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Simplifying 2cos2x + 5cos2 + -3 = 0 Reorder the terms: -3 + 5cos2 + 2cos2x = 0 Solving -3 + 5cos2 + 2cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 5cos2 + 3 + 2cos2x = 0 + 3 Reorder the terms: -3 + 3 + 5cos2 + 2cos2x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 5cos2 + 2cos2x = 0 + 3 5cos2 + 2cos2x = 0 + 3 Combine like terms: 0 + 3 = 3 5cos2 + 2cos2x = 3 Reorder the terms: -3 + 5cos2 + 2cos2x = 3 + -3 Combine like terms: 3 + -3 = 0 -3 + 5cos2 + 2cos2x = 0 The solution to this equation could not be determined.
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