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Simplifying x3 + 3x2 + -189x = 0 Reorder the terms: -189x + 3x2 + x3 = 0 Solving -189x + 3x2 + x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x'. x(-189 + 3x + x2) = 0Subproblem 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 '(-189 + 3x + x2)' equal to zero and attempt to solve: Simplifying -189 + 3x + x2 = 0 Solving -189 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '189' to each side of the equation. -189 + 3x + 189 + x2 = 0 + 189 Reorder the terms: -189 + 189 + 3x + x2 = 0 + 189 Combine like terms: -189 + 189 = 0 0 + 3x + x2 = 0 + 189 3x + x2 = 0 + 189 Combine like terms: 0 + 189 = 189 3x + x2 = 189 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 189 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 189 + 2.25 Combine like terms: 189 + 2.25 = 191.25 2.25 + 3x + x2 = 191.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 191.25 Calculate the square root of the right side: 13.829316686 Break this problem into two subproblems by setting (x + 1.5) equal to 13.829316686 and -13.829316686.Subproblem 1
x + 1.5 = 13.829316686 Simplifying x + 1.5 = 13.829316686 Reorder the terms: 1.5 + x = 13.829316686 Solving 1.5 + x = 13.829316686 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 13.829316686 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 13.829316686 + -1.5 x = 13.829316686 + -1.5 Combine like terms: 13.829316686 + -1.5 = 12.329316686 x = 12.329316686 Simplifying x = 12.329316686Subproblem 2
x + 1.5 = -13.829316686 Simplifying x + 1.5 = -13.829316686 Reorder the terms: 1.5 + x = -13.829316686 Solving 1.5 + x = -13.829316686 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -13.829316686 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -13.829316686 + -1.5 x = -13.829316686 + -1.5 Combine like terms: -13.829316686 + -1.5 = -15.329316686 x = -15.329316686 Simplifying x = -15.329316686Solution
The solution to the problem is based on the solutions from the subproblems. x = {12.329316686, -15.329316686}Solution
x = {0, 12.329316686, -15.329316686}
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