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Simplifying Sen(4x) = sen(2x) Remove parenthesis around (4x) enS * 4x = sen(2x) Reorder the terms for easier multiplication: 4enS * x = sen(2x) Multiply enS * x 4enxS = sen(2x) Remove parenthesis around (2x) 4enxS = ens * 2x Reorder the terms for easier multiplication: 4enxS = 2ens * x Multiply ens * x 4enxS = 2ensx Solving 4enxS = 2ensx Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-2ensx' to each side of the equation. -2ensx + 4enxS = 2ensx + -2ensx Combine like terms: 2ensx + -2ensx = 0 -2ensx + 4enxS = 0 Factor out the Greatest Common Factor (GCF), '2enx'. 2enx(-1s + 2S) = 0 Ignore the factor 2.## Subproblem 1

Set the factor 'enx' equal to zero and attempt to solve: Simplifying enx = 0 Solving enx = 0 Move all terms containing e to the left, all other terms to the right. Simplifying enx = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.## Subproblem 2

Set the factor '(-1s + 2S)' equal to zero and attempt to solve: Simplifying -1s + 2S = 0 Reorder the terms: 2S + -1s = 0 Solving 2S + -1s = 0 Move all terms containing e to the left, all other terms to the right. Add '-2S' to each side of the equation. 2S + -2S + -1s = 0 + -2S Combine like terms: 2S + -2S = 0 0 + -1s = 0 + -2S -1s = 0 + -2S Remove the zero: -1s = -2S Add 's' to each side of the equation. -1s + s = -2S + s Combine like terms: -1s + s = 0 0 = -2S + s Simplifying 0 = -2S + s 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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