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Simplifying x2 + -1x + -0.28 = 0 Reorder the terms: -0.28 + -1x + x2 = 0 Solving -0.28 + -1x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '0.28' to each side of the equation. -0.28 + -1x + 0.28 + x2 = 0 + 0.28 Reorder the terms: -0.28 + 0.28 + -1x + x2 = 0 + 0.28 Combine like terms: -0.28 + 0.28 = 0.00 0.00 + -1x + x2 = 0 + 0.28 -1x + x2 = 0 + 0.28 Combine like terms: 0 + 0.28 = 0.28 -1x + x2 = 0.28 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 0.28 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 0.28 + 0.25 Combine like terms: 0.28 + 0.25 = 0.53 0.25 + -1x + x2 = 0.53 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 0.53 Calculate the square root of the right side: 0.728010989 Break this problem into two subproblems by setting (x + -0.5) equal to 0.728010989 and -0.728010989.Subproblem 1
x + -0.5 = 0.728010989 Simplifying x + -0.5 = 0.728010989 Reorder the terms: -0.5 + x = 0.728010989 Solving -0.5 + x = 0.728010989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 0.728010989 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 0.728010989 + 0.5 x = 0.728010989 + 0.5 Combine like terms: 0.728010989 + 0.5 = 1.228010989 x = 1.228010989 Simplifying x = 1.228010989Subproblem 2
x + -0.5 = -0.728010989 Simplifying x + -0.5 = -0.728010989 Reorder the terms: -0.5 + x = -0.728010989 Solving -0.5 + x = -0.728010989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -0.728010989 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -0.728010989 + 0.5 x = -0.728010989 + 0.5 Combine like terms: -0.728010989 + 0.5 = -0.228010989 x = -0.228010989 Simplifying x = -0.228010989Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.228010989, -0.228010989}
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