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Simplifying 27x3 + 36x6 + 18 = 9 Reorder the terms: 18 + 27x3 + 36x6 = 9 Solving 18 + 27x3 + 36x6 = 9 Solving for variable 'x'. Reorder the terms: 18 + -9 + 27x3 + 36x6 = 9 + -9 Combine like terms: 18 + -9 = 9 9 + 27x3 + 36x6 = 9 + -9 Combine like terms: 9 + -9 = 0 9 + 27x3 + 36x6 = 0 Factor out the Greatest Common Factor (GCF), '9'. 9(1 + 3x3 + 4x6) = 0 Ignore the factor 9.Subproblem 1
Set the factor '(1 + 3x3 + 4x6)' equal to zero and attempt to solve: Simplifying 1 + 3x3 + 4x6 = 0 Solving 1 + 3x3 + 4x6 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 0.25 + 0.75x3 + x6 = 0 Move the constant term to the right: Add '-0.25' to each side of the equation. 0.25 + 0.75x3 + -0.25 + x6 = 0 + -0.25 Reorder the terms: 0.25 + -0.25 + 0.75x3 + x6 = 0 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + 0.75x3 + x6 = 0 + -0.25 0.75x3 + x6 = 0 + -0.25 Combine like terms: 0 + -0.25 = -0.25 0.75x3 + x6 = -0.25 The x term is 0.75x3. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75x3 + 0.140625 + x6 = -0.25 + 0.140625 Reorder the terms: 0.140625 + 0.75x3 + x6 = -0.25 + 0.140625 Combine like terms: -0.25 + 0.140625 = -0.109375 0.140625 + 0.75x3 + x6 = -0.109375 Factor a perfect square on the left side: (x3 + 0.375)(x3 + 0.375) = -0.109375 Can't calculate square root of the right side. 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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