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Simplifying n2 + 18n + 87 = 0 Reorder the terms: 87 + 18n + n2 = 0 Solving 87 + 18n + n2 = 0 Solving for variable 'n'. Begin completing the square. Move the constant term to the right: Add '-87' to each side of the equation. 87 + 18n + -87 + n2 = 0 + -87 Reorder the terms: 87 + -87 + 18n + n2 = 0 + -87 Combine like terms: 87 + -87 = 0 0 + 18n + n2 = 0 + -87 18n + n2 = 0 + -87 Combine like terms: 0 + -87 = -87 18n + n2 = -87 The n term is 18n. Take half its coefficient (9). Square it (81) and add it to both sides. Add '81' to each side of the equation. 18n + 81 + n2 = -87 + 81 Reorder the terms: 81 + 18n + n2 = -87 + 81 Combine like terms: -87 + 81 = -6 81 + 18n + n2 = -6 Factor a perfect square on the left side: (n + 9)(n + 9) = -6 Can't calculate square root of the right side. The solution to this equation could not be determined.
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