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Simplifying 5x2 = -20x + -1 Reorder the terms: 5x2 = -1 + -20x Solving 5x2 = -1 + -20x Solving for variable 'x'. Reorder the terms: 1 + 20x + 5x2 = -1 + -20x + 1 + 20x Reorder the terms: 1 + 20x + 5x2 = -1 + 1 + -20x + 20x Combine like terms: -1 + 1 = 0 1 + 20x + 5x2 = 0 + -20x + 20x 1 + 20x + 5x2 = -20x + 20x Combine like terms: -20x + 20x = 0 1 + 20x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.2 + 4x + x2 = 0 Move the constant term to the right: Add '-0.2' to each side of the equation. 0.2 + 4x + -0.2 + x2 = 0 + -0.2 Reorder the terms: 0.2 + -0.2 + 4x + x2 = 0 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + 4x + x2 = 0 + -0.2 4x + x2 = 0 + -0.2 Combine like terms: 0 + -0.2 = -0.2 4x + x2 = -0.2 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = -0.2 + 4 Reorder the terms: 4 + 4x + x2 = -0.2 + 4 Combine like terms: -0.2 + 4 = 3.8 4 + 4x + x2 = 3.8 Factor a perfect square on the left side: (x + 2)(x + 2) = 3.8 Calculate the square root of the right side: 1.949358869 Break this problem into two subproblems by setting (x + 2) equal to 1.949358869 and -1.949358869.Subproblem 1
x + 2 = 1.949358869 Simplifying x + 2 = 1.949358869 Reorder the terms: 2 + x = 1.949358869 Solving 2 + x = 1.949358869 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 1.949358869 + -2 Combine like terms: 2 + -2 = 0 0 + x = 1.949358869 + -2 x = 1.949358869 + -2 Combine like terms: 1.949358869 + -2 = -0.050641131 x = -0.050641131 Simplifying x = -0.050641131Subproblem 2
x + 2 = -1.949358869 Simplifying x + 2 = -1.949358869 Reorder the terms: 2 + x = -1.949358869 Solving 2 + x = -1.949358869 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -1.949358869 + -2 Combine like terms: 2 + -2 = 0 0 + x = -1.949358869 + -2 x = -1.949358869 + -2 Combine like terms: -1.949358869 + -2 = -3.949358869 x = -3.949358869 Simplifying x = -3.949358869Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.050641131, -3.949358869}
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