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Simplifying d2 + -11d + 11 = 0 Reorder the terms: 11 + -11d + d2 = 0 Solving 11 + -11d + d2 = 0 Solving for variable 'd'. Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + -11d + -11 + d2 = 0 + -11 Reorder the terms: 11 + -11 + -11d + d2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -11d + d2 = 0 + -11 -11d + d2 = 0 + -11 Combine like terms: 0 + -11 = -11 -11d + d2 = -11 The d term is -11d. Take half its coefficient (-5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. -11d + 30.25 + d2 = -11 + 30.25 Reorder the terms: 30.25 + -11d + d2 = -11 + 30.25 Combine like terms: -11 + 30.25 = 19.25 30.25 + -11d + d2 = 19.25 Factor a perfect square on the left side: (d + -5.5)(d + -5.5) = 19.25 Calculate the square root of the right side: 4.387482194 Break this problem into two subproblems by setting (d + -5.5) equal to 4.387482194 and -4.387482194.Subproblem 1
d + -5.5 = 4.387482194 Simplifying d + -5.5 = 4.387482194 Reorder the terms: -5.5 + d = 4.387482194 Solving -5.5 + d = 4.387482194 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + d = 4.387482194 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + d = 4.387482194 + 5.5 d = 4.387482194 + 5.5 Combine like terms: 4.387482194 + 5.5 = 9.887482194 d = 9.887482194 Simplifying d = 9.887482194Subproblem 2
d + -5.5 = -4.387482194 Simplifying d + -5.5 = -4.387482194 Reorder the terms: -5.5 + d = -4.387482194 Solving -5.5 + d = -4.387482194 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + d = -4.387482194 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + d = -4.387482194 + 5.5 d = -4.387482194 + 5.5 Combine like terms: -4.387482194 + 5.5 = 1.112517806 d = 1.112517806 Simplifying d = 1.112517806Solution
The solution to the problem is based on the solutions from the subproblems. d = {9.887482194, 1.112517806}
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