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Simplifying -8n2 + 7n + -4 = 0 Reorder the terms: -4 + 7n + -8n2 = 0 Solving -4 + 7n + -8n2 = 0 Solving for variable 'n'. Begin completing the square. Divide all terms by -8 the coefficient of the squared term: Divide each side by '-8'. 0.5 + -0.875n + n2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + -0.875n + -0.5 + n2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + -0.875n + n2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + -0.875n + n2 = 0 + -0.5 -0.875n + n2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 -0.875n + n2 = -0.5 The n term is -0.875n. Take half its coefficient (-0.4375). Square it (0.19140625) and add it to both sides. Add '0.19140625' to each side of the equation. -0.875n + 0.19140625 + n2 = -0.5 + 0.19140625 Reorder the terms: 0.19140625 + -0.875n + n2 = -0.5 + 0.19140625 Combine like terms: -0.5 + 0.19140625 = -0.30859375 0.19140625 + -0.875n + n2 = -0.30859375 Factor a perfect square on the left side: (n + -0.4375)(n + -0.4375) = -0.30859375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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