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Simplifying n2 + -5n + -15 = 0 Reorder the terms: -15 + -5n + n2 = 0 Solving -15 + -5n + n2 = 0 Solving for variable 'n'. Begin completing the square. Move the constant term to the right: Add '15' to each side of the equation. -15 + -5n + 15 + n2 = 0 + 15 Reorder the terms: -15 + 15 + -5n + n2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -5n + n2 = 0 + 15 -5n + n2 = 0 + 15 Combine like terms: 0 + 15 = 15 -5n + n2 = 15 The n term is -5n. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5n + 6.25 + n2 = 15 + 6.25 Reorder the terms: 6.25 + -5n + n2 = 15 + 6.25 Combine like terms: 15 + 6.25 = 21.25 6.25 + -5n + n2 = 21.25 Factor a perfect square on the left side: (n + -2.5)(n + -2.5) = 21.25 Calculate the square root of the right side: 4.609772229 Break this problem into two subproblems by setting (n + -2.5) equal to 4.609772229 and -4.609772229.Subproblem 1
n + -2.5 = 4.609772229 Simplifying n + -2.5 = 4.609772229 Reorder the terms: -2.5 + n = 4.609772229 Solving -2.5 + n = 4.609772229 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + n = 4.609772229 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + n = 4.609772229 + 2.5 n = 4.609772229 + 2.5 Combine like terms: 4.609772229 + 2.5 = 7.109772229 n = 7.109772229 Simplifying n = 7.109772229Subproblem 2
n + -2.5 = -4.609772229 Simplifying n + -2.5 = -4.609772229 Reorder the terms: -2.5 + n = -4.609772229 Solving -2.5 + n = -4.609772229 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + n = -4.609772229 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + n = -4.609772229 + 2.5 n = -4.609772229 + 2.5 Combine like terms: -4.609772229 + 2.5 = -2.109772229 n = -2.109772229 Simplifying n = -2.109772229Solution
The solution to the problem is based on the solutions from the subproblems. n = {7.109772229, -2.109772229}
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