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Simplifying 9 + -1x + 9 = 1 + -1x2 Reorder the terms: 9 + 9 + -1x = 1 + -1x2 Combine like terms: 9 + 9 = 18 18 + -1x = 1 + -1x2 Solving 18 + -1x = 1 + -1x2 Solving for variable 'x'. Reorder the terms: 18 + -1 + -1x + x2 = 1 + -1x2 + -1 + x2 Combine like terms: 18 + -1 = 17 17 + -1x + x2 = 1 + -1x2 + -1 + x2 Reorder the terms: 17 + -1x + x2 = 1 + -1 + -1x2 + x2 Combine like terms: 1 + -1 = 0 17 + -1x + x2 = 0 + -1x2 + x2 17 + -1x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 17 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-17' to each side of the equation. 17 + -1x + -17 + x2 = 0 + -17 Reorder the terms: 17 + -17 + -1x + x2 = 0 + -17 Combine like terms: 17 + -17 = 0 0 + -1x + x2 = 0 + -17 -1x + x2 = 0 + -17 Combine like terms: 0 + -17 = -17 -1x + x2 = -17 The x term is -1x. 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. -1x + 0.25 + x2 = -17 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -17 + 0.25 Combine like terms: -17 + 0.25 = -16.75 0.25 + -1x + x2 = -16.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -16.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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