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Simplifying (2x3 + -1x2 + -18x) = 0 Reorder the terms: (-18x + -1x2 + 2x3) = 0 Remove parenthesis around (-18x + -1x2 + 2x3) -18x + -1x2 + 2x3 = 0 Solving -18x + -1x2 + 2x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x'. x(-18 + -1x + 2x2) = 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 '(-18 + -1x + 2x2)' equal to zero and attempt to solve: Simplifying -18 + -1x + 2x2 = 0 Solving -18 + -1x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -9 + -0.5x + x2 = 0 Move the constant term to the right: Add '9' to each side of the equation. -9 + -0.5x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + -0.5x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -0.5x + x2 = 0 + 9 -0.5x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 -0.5x + x2 = 9 The x term is -0.5x. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5x + 0.0625 + x2 = 9 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = 9 + 0.0625 Combine like terms: 9 + 0.0625 = 9.0625 0.0625 + -0.5x + x2 = 9.0625 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = 9.0625 Calculate the square root of the right side: 3.010398645 Break this problem into two subproblems by setting (x + -0.25) equal to 3.010398645 and -3.010398645.Subproblem 1
x + -0.25 = 3.010398645 Simplifying x + -0.25 = 3.010398645 Reorder the terms: -0.25 + x = 3.010398645 Solving -0.25 + x = 3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 3.010398645 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 3.010398645 + 0.25 x = 3.010398645 + 0.25 Combine like terms: 3.010398645 + 0.25 = 3.260398645 x = 3.260398645 Simplifying x = 3.260398645Subproblem 2
x + -0.25 = -3.010398645 Simplifying x + -0.25 = -3.010398645 Reorder the terms: -0.25 + x = -3.010398645 Solving -0.25 + x = -3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -3.010398645 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -3.010398645 + 0.25 x = -3.010398645 + 0.25 Combine like terms: -3.010398645 + 0.25 = -2.760398645 x = -2.760398645 Simplifying x = -2.760398645Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.260398645, -2.760398645}Solution
x = {0, 3.260398645, -2.760398645}
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