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Simplifying 16.36 = x2 + x Reorder the terms: 16.36 = x + x2 Solving 16.36 = x + x2 Solving for variable 'x'. Reorder the terms: 16.36 + -1x + -1x2 = x + -1x + x2 + -1x2 Combine like terms: x + -1x = 0 16.36 + -1x + -1x2 = 0 + x2 + -1x2 16.36 + -1x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 16.36 + -1x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -16.36 + x + x2 = 0 Move the constant term to the right: Add '16.36' to each side of the equation. -16.36 + x + 16.36 + x2 = 0 + 16.36 Reorder the terms: -16.36 + 16.36 + x + x2 = 0 + 16.36 Combine like terms: -16.36 + 16.36 = 0.00 0.00 + x + x2 = 0 + 16.36 x + x2 = 0 + 16.36 Combine like terms: 0 + 16.36 = 16.36 x + x2 = 16.36 The x term is x. 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. + 0.25 + x2 = 16.36 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 16.36 + 0.25 Combine like terms: 16.36 + 0.25 = 16.61 1.25 + x2 = 16.61 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 16.61 Calculate the square root of the right side: 4.075536774 Break this problem into two subproblems by setting (x + 0.5) equal to 4.075536774 and -4.075536774.Subproblem 1
x + 0.5 = 4.075536774 Simplifying x + 0.5 = 4.075536774 Reorder the terms: 0.5 + x = 4.075536774 Solving 0.5 + x = 4.075536774 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 = 4.075536774 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.075536774 + -0.5 x = 4.075536774 + -0.5 Combine like terms: 4.075536774 + -0.5 = 3.575536774 x = 3.575536774 Simplifying x = 3.575536774Subproblem 2
x + 0.5 = -4.075536774 Simplifying x + 0.5 = -4.075536774 Reorder the terms: 0.5 + x = -4.075536774 Solving 0.5 + x = -4.075536774 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 = -4.075536774 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.075536774 + -0.5 x = -4.075536774 + -0.5 Combine like terms: -4.075536774 + -0.5 = -4.575536774 x = -4.575536774 Simplifying x = -4.575536774Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.575536774, -4.575536774}
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