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Simplifying -0.5x2 + 0.5x + 1.15 = 0 Reorder the terms: 1.15 + 0.5x + -0.5x2 = 0 Solving 1.15 + 0.5x + -0.5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -0.5 the coefficient of the squared term: Divide each side by '-0.5'. -2.3 + -1x + x2 = 0 Move the constant term to the right: Add '2.3' to each side of the equation. -2.3 + -1x + 2.3 + x2 = 0 + 2.3 Reorder the terms: -2.3 + 2.3 + -1x + x2 = 0 + 2.3 Combine like terms: -2.3 + 2.3 = 0.0 0.0 + -1x + x2 = 0 + 2.3 -1x + x2 = 0 + 2.3 Combine like terms: 0 + 2.3 = 2.3 -1x + x2 = 2.3 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 = 2.3 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 2.3 + 0.25 Combine like terms: 2.3 + 0.25 = 2.55 0.25 + -1x + x2 = 2.55 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 2.55 Calculate the square root of the right side: 1.596871942 Break this problem into two subproblems by setting (x + -0.5) equal to 1.596871942 and -1.596871942.Subproblem 1
x + -0.5 = 1.596871942 Simplifying x + -0.5 = 1.596871942 Reorder the terms: -0.5 + x = 1.596871942 Solving -0.5 + x = 1.596871942 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 = 1.596871942 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.596871942 + 0.5 x = 1.596871942 + 0.5 Combine like terms: 1.596871942 + 0.5 = 2.096871942 x = 2.096871942 Simplifying x = 2.096871942Subproblem 2
x + -0.5 = -1.596871942 Simplifying x + -0.5 = -1.596871942 Reorder the terms: -0.5 + x = -1.596871942 Solving -0.5 + x = -1.596871942 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 = -1.596871942 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.596871942 + 0.5 x = -1.596871942 + 0.5 Combine like terms: -1.596871942 + 0.5 = -1.096871942 x = -1.096871942 Simplifying x = -1.096871942Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.096871942, -1.096871942}
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