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Simplifying 20x2 + -24x + -120 = 0 Reorder the terms: -120 + -24x + 20x2 = 0 Solving -120 + -24x + 20x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(-30 + -6x + 5x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-30 + -6x + 5x2)' equal to zero and attempt to solve: Simplifying -30 + -6x + 5x2 = 0 Solving -30 + -6x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -6 + -1.2x + x2 = 0 Move the constant term to the right: Add '6' to each side of the equation. -6 + -1.2x + 6 + x2 = 0 + 6 Reorder the terms: -6 + 6 + -1.2x + x2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1.2x + x2 = 0 + 6 -1.2x + x2 = 0 + 6 Combine like terms: 0 + 6 = 6 -1.2x + x2 = 6 The x term is -1.2x. Take half its coefficient (-0.6). Square it (0.36) and add it to both sides. Add '0.36' to each side of the equation. -1.2x + 0.36 + x2 = 6 + 0.36 Reorder the terms: 0.36 + -1.2x + x2 = 6 + 0.36 Combine like terms: 6 + 0.36 = 6.36 0.36 + -1.2x + x2 = 6.36 Factor a perfect square on the left side: (x + -0.6)(x + -0.6) = 6.36 Calculate the square root of the right side: 2.521904043 Break this problem into two subproblems by setting (x + -0.6) equal to 2.521904043 and -2.521904043.Subproblem 1
x + -0.6 = 2.521904043 Simplifying x + -0.6 = 2.521904043 Reorder the terms: -0.6 + x = 2.521904043 Solving -0.6 + x = 2.521904043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = 2.521904043 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = 2.521904043 + 0.6 x = 2.521904043 + 0.6 Combine like terms: 2.521904043 + 0.6 = 3.121904043 x = 3.121904043 Simplifying x = 3.121904043Subproblem 2
x + -0.6 = -2.521904043 Simplifying x + -0.6 = -2.521904043 Reorder the terms: -0.6 + x = -2.521904043 Solving -0.6 + x = -2.521904043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = -2.521904043 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = -2.521904043 + 0.6 x = -2.521904043 + 0.6 Combine like terms: -2.521904043 + 0.6 = -1.921904043 x = -1.921904043 Simplifying x = -1.921904043Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.121904043, -1.921904043}Solution
x = {3.121904043, -1.921904043}
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