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Simplifying 4cos20 + 6cosx + 2 = 0 Reorder the terms: 2 + 6cosx + 4cos20 = 0 Solving 2 + 6cosx + 4cos20 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + 6cosx + -2 + 4cos20 = 0 + -2 Reorder the terms: 2 + -2 + 6cosx + 4cos20 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 6cosx + 4cos20 = 0 + -2 6cosx + 4cos20 = 0 + -2 Combine like terms: 0 + -2 = -2 6cosx + 4cos20 = -2 Reorder the terms: 2 + 6cosx + 4cos20 = -2 + 2 Combine like terms: -2 + 2 = 0 2 + 6cosx + 4cos20 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(1 + 3cosx + 2cos20) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(1 + 3cosx + 2cos20)' equal to zero and attempt to solve: Simplifying 1 + 3cosx + 2cos20 = 0 Solving 1 + 3cosx + 2cos20 = 0 Move all terms containing c to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + 3cosx + -1 + 2cos20 = 0 + -1 Reorder the terms: 1 + -1 + 3cosx + 2cos20 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3cosx + 2cos20 = 0 + -1 3cosx + 2cos20 = 0 + -1 Combine like terms: 0 + -1 = -1 3cosx + 2cos20 = -1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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