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Simplifying -1n2 + -1n + -90 = 0 Reorder the terms: -90 + -1n + -1n2 = 0 Solving -90 + -1n + -1n2 = 0 Solving for variable 'n'. Factor out the Greatest Common Factor (GCF), '-1'. -1(90 + n + n2) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(90 + n + n2)' equal to zero and attempt to solve: Simplifying 90 + n + n2 = 0 Solving 90 + n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '-90' to each side of the equation. 90 + n + -90 + n2 = 0 + -90 Reorder the terms: 90 + -90 + n + n2 = 0 + -90 Combine like terms: 90 + -90 = 0 0 + n + n2 = 0 + -90 n + n2 = 0 + -90 Combine like terms: 0 + -90 = -90 n + n2 = -90 The n term is n. 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. n + 0.25 + n2 = -90 + 0.25 Reorder the terms: 0.25 + n + n2 = -90 + 0.25 Combine like terms: -90 + 0.25 = -89.75 0.25 + n + n2 = -89.75 Factor a perfect square on the left side: (n + 0.5)(n + 0.5) = -89.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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