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Simplifying (2x3) + (2x2) + 18x = 0 Reorder the terms: 18x + (2x2) + (2x3) = 0 Solving 18x + (2x2) + (2x3) = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2x'. 2x(9 + x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(9 + x + x2)' equal to zero and attempt to solve: Simplifying 9 + x + x2 = 0 Solving 9 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-9' to each side of the equation. 9 + x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x + x2 = 0 + -9 x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 x + x2 = -9 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = -9 + 0.25 Reorder the terms: 0.25 + x + x2 = -9 + 0.25 Combine like terms: -9 + 0.25 = -8.75 0.25 + x + x2 = -8.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -8.75 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.Solution
x = {0}
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