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Simplifying 2xcos(2x) + -1x2 + 4x + -4 = 0 Remove parenthesis around (2x) 2cosx * 2x + -1x2 + 4x + -4 = 0 Reorder the terms for easier multiplication: 2 * 2cosx * x + -1x2 + 4x + -4 = 0 Multiply 2 * 2 4cosx * x + -1x2 + 4x + -4 = 0 Multiply cosx * x 4cosx2 + -1x2 + 4x + -4 = 0 Reorder the terms: -4 + 4cosx2 + 4x + -1x2 = 0 Solving -4 + 4cosx2 + 4x + -1x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4cosx2 + 4x + 4 + -1x2 = 0 + 4 Reorder the terms: -4 + 4 + 4cosx2 + 4x + -1x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 4cosx2 + 4x + -1x2 = 0 + 4 4cosx2 + 4x + -1x2 = 0 + 4 Combine like terms: 0 + 4 = 4 4cosx2 + 4x + -1x2 = 4 Add '-4x' to each side of the equation. 4cosx2 + 4x + -4x + -1x2 = 4 + -4x Combine like terms: 4x + -4x = 0 4cosx2 + 0 + -1x2 = 4 + -4x 4cosx2 + -1x2 = 4 + -4x Add 'x2' to each side of the equation. 4cosx2 + -1x2 + x2 = 4 + -4x + x2 Combine like terms: -1x2 + x2 = 0 4cosx2 + 0 = 4 + -4x + x2 4cosx2 = 4 + -4x + x2 Divide each side by '4osx2'. c = o-1s-1x-2 + -1o-1s-1x-1 + 0.25o-1s-1 Simplifying c = o-1s-1x-2 + -1o-1s-1x-1 + 0.25o-1s-1 Reorder the terms: c = 0.25o-1s-1 + o-1s-1x-2 + -1o-1s-1x-1
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