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Simplifying -9n2 + 8n + -9 = -6 Reorder the terms: -9 + 8n + -9n2 = -6 Solving -9 + 8n + -9n2 = -6 Solving for variable 'n'. Reorder the terms: -9 + 6 + 8n + -9n2 = -6 + 6 Combine like terms: -9 + 6 = -3 -3 + 8n + -9n2 = -6 + 6 Combine like terms: -6 + 6 = 0 -3 + 8n + -9n2 = 0 Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. 0.3333333333 + -0.8888888889n + n2 = 0 Move the constant term to the right: Add '-0.3333333333' to each side of the equation. 0.3333333333 + -0.8888888889n + -0.3333333333 + n2 = 0 + -0.3333333333 Reorder the terms: 0.3333333333 + -0.3333333333 + -0.8888888889n + n2 = 0 + -0.3333333333 Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000 0.0000000000 + -0.8888888889n + n2 = 0 + -0.3333333333 -0.8888888889n + n2 = 0 + -0.3333333333 Combine like terms: 0 + -0.3333333333 = -0.3333333333 -0.8888888889n + n2 = -0.3333333333 The n term is -0.8888888889n. Take half its coefficient (-0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. -0.8888888889n + 0.1975308642 + n2 = -0.3333333333 + 0.1975308642 Reorder the terms: 0.1975308642 + -0.8888888889n + n2 = -0.3333333333 + 0.1975308642 Combine like terms: -0.3333333333 + 0.1975308642 = -0.1358024691 0.1975308642 + -0.8888888889n + n2 = -0.1358024691 Factor a perfect square on the left side: (n + -0.4444444445)(n + -0.4444444445) = -0.1358024691 Can't calculate square root of the right side. The solution to this equation could not be determined.
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