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Simplifying Cos2x + 5cosx + 3 = 0 Reorder the terms: 3 + 5cosx + os2xC = 0 Solving 3 + 5cosx + os2xC = 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 + 5cosx + -3 + os2xC = 0 + -3 Reorder the terms: 3 + -3 + 5cosx + os2xC = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 5cosx + os2xC = 0 + -3 5cosx + os2xC = 0 + -3 Combine like terms: 0 + -3 = -3 5cosx + os2xC = -3 Add '-1os2xC' to each side of the equation. 5cosx + os2xC + -1os2xC = -3 + -1os2xC Combine like terms: os2xC + -1os2xC = 0 5cosx + 0 = -3 + -1os2xC 5cosx = -3 + -1os2xC Divide each side by '5osx'. c = -0.6o-1s-1x-1 + -0.2sC Simplifying c = -0.6o-1s-1x-1 + -0.2sC
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