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Simplifying 8cos(3 + -5x) = 4 (3 * 8cos + -5x * 8cos) = 4 (24cos + -40cosx) = 4 Solving 24cos + -40cosx = 4 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Reorder the terms: -4 + 24cos + -40cosx = 4 + -4 Combine like terms: 4 + -4 = 0 -4 + 24cos + -40cosx = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-1 + 6cos + -10cosx) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-1 + 6cos + -10cosx)' equal to zero and attempt to solve: Simplifying -1 + 6cos + -10cosx = 0 Solving -1 + 6cos + -10cosx = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 6cos + 1 + -10cosx = 0 + 1 Reorder the terms: -1 + 1 + 6cos + -10cosx = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 6cos + -10cosx = 0 + 1 6cos + -10cosx = 0 + 1 Combine like terms: 0 + 1 = 1 6cos + -10cosx = 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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