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Simplifying 20x2 + -10x + -4 = 0 Reorder the terms: -4 + -10x + 20x2 = 0 Solving -4 + -10x + 20x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-2 + -5x + 10x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-2 + -5x + 10x2)' equal to zero and attempt to solve: Simplifying -2 + -5x + 10x2 = 0 Solving -2 + -5x + 10x2 = 0 Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. -0.2 + -0.5x + x2 = 0.0 Move the constant term to the right: Add '0.2' to each side of the equation. -0.2 + -0.5x + 0.2 + x2 = 0.0 + 0.2 Reorder the terms: -0.2 + 0.2 + -0.5x + x2 = 0.0 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + -0.5x + x2 = 0.0 + 0.2 -0.5x + x2 = 0.0 + 0.2 Combine like terms: 0.0 + 0.2 = 0.2 -0.5x + x2 = 0.2 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 = 0.2 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = 0.2 + 0.0625 Combine like terms: 0.2 + 0.0625 = 0.2625 0.0625 + -0.5x + x2 = 0.2625 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = 0.2625 Calculate the square root of the right side: 0.512347538 Break this problem into two subproblems by setting (x + -0.25) equal to 0.512347538 and -0.512347538.Subproblem 1
x + -0.25 = 0.512347538 Simplifying x + -0.25 = 0.512347538 Reorder the terms: -0.25 + x = 0.512347538 Solving -0.25 + x = 0.512347538 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 = 0.512347538 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 0.512347538 + 0.25 x = 0.512347538 + 0.25 Combine like terms: 0.512347538 + 0.25 = 0.762347538 x = 0.762347538 Simplifying x = 0.762347538Subproblem 2
x + -0.25 = -0.512347538 Simplifying x + -0.25 = -0.512347538 Reorder the terms: -0.25 + x = -0.512347538 Solving -0.25 + x = -0.512347538 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 = -0.512347538 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -0.512347538 + 0.25 x = -0.512347538 + 0.25 Combine like terms: -0.512347538 + 0.25 = -0.262347538 x = -0.262347538 Simplifying x = -0.262347538Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.762347538, -0.262347538}Solution
x = {0.762347538, -0.262347538}
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