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Simplifying 9x3 + 15x2 + -18x = 0 Reorder the terms: -18x + 15x2 + 9x3 = 0 Solving -18x + 15x2 + 9x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3x'. 3x(-6 + 5x + 3x2) = 0 Ignore the factor 3.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 '(-6 + 5x + 3x2)' equal to zero and attempt to solve: Simplifying -6 + 5x + 3x2 = 0 Solving -6 + 5x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -2 + 1.666666667x + x2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + 1.666666667x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + 1.666666667x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 1.666666667x + x2 = 0 + 2 1.666666667x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 1.666666667x + x2 = 2 The x term is 1.666666667x. Take half its coefficient (0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. 1.666666667x + 0.6944444447 + x2 = 2 + 0.6944444447 Reorder the terms: 0.6944444447 + 1.666666667x + x2 = 2 + 0.6944444447 Combine like terms: 2 + 0.6944444447 = 2.6944444447 0.6944444447 + 1.666666667x + x2 = 2.6944444447 Factor a perfect square on the left side: (x + 0.8333333335)(x + 0.8333333335) = 2.6944444447 Calculate the square root of the right side: 1.6414763 Break this problem into two subproblems by setting (x + 0.8333333335) equal to 1.6414763 and -1.6414763.Subproblem 1
x + 0.8333333335 = 1.6414763 Simplifying x + 0.8333333335 = 1.6414763 Reorder the terms: 0.8333333335 + x = 1.6414763 Solving 0.8333333335 + x = 1.6414763 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = 1.6414763 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = 1.6414763 + -0.8333333335 x = 1.6414763 + -0.8333333335 Combine like terms: 1.6414763 + -0.8333333335 = 0.8081429665 x = 0.8081429665 Simplifying x = 0.8081429665Subproblem 2
x + 0.8333333335 = -1.6414763 Simplifying x + 0.8333333335 = -1.6414763 Reorder the terms: 0.8333333335 + x = -1.6414763 Solving 0.8333333335 + x = -1.6414763 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = -1.6414763 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = -1.6414763 + -0.8333333335 x = -1.6414763 + -0.8333333335 Combine like terms: -1.6414763 + -0.8333333335 = -2.4748096335 x = -2.4748096335 Simplifying x = -2.4748096335Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.8081429665, -2.4748096335}Solution
x = {0, 0.8081429665, -2.4748096335}
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