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Simplifying 4x2 + -52x + -20 = 0 Reorder the terms: -20 + -52x + 4x2 = 0 Solving -20 + -52x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(-5 + -13x + x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-5 + -13x + x2)' equal to zero and attempt to solve: Simplifying -5 + -13x + x2 = 0 Solving -5 + -13x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '5' to each side of the equation. -5 + -13x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + -13x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -13x + x2 = 0 + 5 -13x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -13x + x2 = 5 The x term is -13x. Take half its coefficient (-6.5). Square it (42.25) and add it to both sides. Add '42.25' to each side of the equation. -13x + 42.25 + x2 = 5 + 42.25 Reorder the terms: 42.25 + -13x + x2 = 5 + 42.25 Combine like terms: 5 + 42.25 = 47.25 42.25 + -13x + x2 = 47.25 Factor a perfect square on the left side: (x + -6.5)(x + -6.5) = 47.25 Calculate the square root of the right side: 6.873863542 Break this problem into two subproblems by setting (x + -6.5) equal to 6.873863542 and -6.873863542.Subproblem 1
x + -6.5 = 6.873863542 Simplifying x + -6.5 = 6.873863542 Reorder the terms: -6.5 + x = 6.873863542 Solving -6.5 + x = 6.873863542 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = 6.873863542 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = 6.873863542 + 6.5 x = 6.873863542 + 6.5 Combine like terms: 6.873863542 + 6.5 = 13.373863542 x = 13.373863542 Simplifying x = 13.373863542Subproblem 2
x + -6.5 = -6.873863542 Simplifying x + -6.5 = -6.873863542 Reorder the terms: -6.5 + x = -6.873863542 Solving -6.5 + x = -6.873863542 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = -6.873863542 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = -6.873863542 + 6.5 x = -6.873863542 + 6.5 Combine like terms: -6.873863542 + 6.5 = -0.373863542 x = -0.373863542 Simplifying x = -0.373863542Solution
The solution to the problem is based on the solutions from the subproblems. x = {13.373863542, -0.373863542}Solution
x = {13.373863542, -0.373863542}
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