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Simplifying 10cos2(x) + cos(x) + -11 = 0 Multiply cos2 * x 10cos2x + cos(x) + -11 = 0 Multiply cos * x 10cos2x + cosx + -11 = 0 Reorder the terms: -11 + cosx + 10cos2x = 0 Solving -11 + cosx + 10cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '11' to each side of the equation. -11 + cosx + 11 + 10cos2x = 0 + 11 Reorder the terms: -11 + 11 + cosx + 10cos2x = 0 + 11 Combine like terms: -11 + 11 = 0 0 + cosx + 10cos2x = 0 + 11 cosx + 10cos2x = 0 + 11 Combine like terms: 0 + 11 = 11 cosx + 10cos2x = 11 Reorder the terms: -11 + cosx + 10cos2x = 11 + -11 Combine like terms: 11 + -11 = 0 -11 + cosx + 10cos2x = 0 The solution to this equation could not be determined.
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