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Simplifying Cos2x + -3cosx + -2 = 0 Reorder the terms: -2 + -3cosx + os2xC = 0 Solving -2 + -3cosx + os2xC = 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 + -3cosx + 2 + os2xC = 0 + 2 Reorder the terms: -2 + 2 + -3cosx + os2xC = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3cosx + os2xC = 0 + 2 -3cosx + os2xC = 0 + 2 Combine like terms: 0 + 2 = 2 -3cosx + os2xC = 2 Add '-1os2xC' to each side of the equation. -3cosx + os2xC + -1os2xC = 2 + -1os2xC Combine like terms: os2xC + -1os2xC = 0 -3cosx + 0 = 2 + -1os2xC -3cosx = 2 + -1os2xC Divide each side by '-3osx'. c = -0.6666666667o-1s-1x-1 + 0.3333333333sC Simplifying c = -0.6666666667o-1s-1x-1 + 0.3333333333sC
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