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Simplifying 4x2 + -6x + -20 = 0 Reorder the terms: -20 + -6x + 4x2 = 0 Solving -20 + -6x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-10 + -3x + 2x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-10 + -3x + 2x2)' equal to zero and attempt to solve: Simplifying -10 + -3x + 2x2 = 0 Solving -10 + -3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -5 + -1.5x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -1.5x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + -1.5x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1.5x + x2 = 0 + 5 -1.5x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -1.5x + x2 = 5 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = 5 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = 5 + 0.5625 Combine like terms: 5 + 0.5625 = 5.5625 0.5625 + -1.5x + x2 = 5.5625 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = 5.5625 Calculate the square root of the right side: 2.358495283 Break this problem into two subproblems by setting (x + -0.75) equal to 2.358495283 and -2.358495283.Subproblem 1
x + -0.75 = 2.358495283 Simplifying x + -0.75 = 2.358495283 Reorder the terms: -0.75 + x = 2.358495283 Solving -0.75 + x = 2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 2.358495283 + 0.75 x = 2.358495283 + 0.75 Combine like terms: 2.358495283 + 0.75 = 3.108495283 x = 3.108495283 Simplifying x = 3.108495283Subproblem 2
x + -0.75 = -2.358495283 Simplifying x + -0.75 = -2.358495283 Reorder the terms: -0.75 + x = -2.358495283 Solving -0.75 + x = -2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -2.358495283 + 0.75 x = -2.358495283 + 0.75 Combine like terms: -2.358495283 + 0.75 = -1.608495283 x = -1.608495283 Simplifying x = -1.608495283Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.108495283, -1.608495283}Solution
x = {3.108495283, -1.608495283}
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