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Simplifying 0 = w2 + -1w + -28 Reorder the terms: 0 = -28 + -1w + w2 Solving 0 = -28 + -1w + w2 Solving for variable 'w'. Combine like terms: 0 + 28 = 28 28 + w + -1w2 = -28 + -1w + w2 + 28 + w + -1w2 Reorder the terms: 28 + w + -1w2 = -28 + 28 + -1w + w + w2 + -1w2 Combine like terms: -28 + 28 = 0 28 + w + -1w2 = 0 + -1w + w + w2 + -1w2 28 + w + -1w2 = -1w + w + w2 + -1w2 Combine like terms: -1w + w = 0 28 + w + -1w2 = 0 + w2 + -1w2 28 + w + -1w2 = w2 + -1w2 Combine like terms: w2 + -1w2 = 0 28 + w + -1w2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -28 + -1w + w2 = 0 Move the constant term to the right: Add '28' to each side of the equation. -28 + -1w + 28 + w2 = 0 + 28 Reorder the terms: -28 + 28 + -1w + w2 = 0 + 28 Combine like terms: -28 + 28 = 0 0 + -1w + w2 = 0 + 28 -1w + w2 = 0 + 28 Combine like terms: 0 + 28 = 28 -1w + w2 = 28 The w term is w. 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. -1w + 0.25 + w2 = 28 + 0.25 Reorder the terms: 0.25 + -1w + w2 = 28 + 0.25 Combine like terms: 28 + 0.25 = 28.25 0.25 + -1w + w2 = 28.25 Factor a perfect square on the left side: (w + 0.5)(w + 0.5) = 28.25 Calculate the square root of the right side: 5.315072906 Break this problem into two subproblems by setting (w + 0.5) equal to 5.315072906 and -5.315072906.Subproblem 1
w + 0.5 = 5.315072906 Simplifying w + 0.5 = 5.315072906 Reorder the terms: 0.5 + w = 5.315072906 Solving 0.5 + w = 5.315072906 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + w = 5.315072906 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + w = 5.315072906 + -0.5 w = 5.315072906 + -0.5 Combine like terms: 5.315072906 + -0.5 = 4.815072906 w = 4.815072906 Simplifying w = 4.815072906Subproblem 2
w + 0.5 = -5.315072906 Simplifying w + 0.5 = -5.315072906 Reorder the terms: 0.5 + w = -5.315072906 Solving 0.5 + w = -5.315072906 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + w = -5.315072906 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + w = -5.315072906 + -0.5 w = -5.315072906 + -0.5 Combine like terms: -5.315072906 + -0.5 = -5.815072906 w = -5.815072906 Simplifying w = -5.815072906Solution
The solution to the problem is based on the solutions from the subproblems. w = {4.815072906, -5.815072906}
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