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Simplifying 8x2 + -8x + 77 = 0 Reorder the terms: 77 + -8x + 8x2 = 0 Solving 77 + -8x + 8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 9.625 + -1x + x2 = 0 Move the constant term to the right: Add '-9.625' to each side of the equation. 9.625 + -1x + -9.625 + x2 = 0 + -9.625 Reorder the terms: 9.625 + -9.625 + -1x + x2 = 0 + -9.625 Combine like terms: 9.625 + -9.625 = 0.000 0.000 + -1x + x2 = 0 + -9.625 -1x + x2 = 0 + -9.625 Combine like terms: 0 + -9.625 = -9.625 -1x + x2 = -9.625 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 = -9.625 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -9.625 + 0.25 Combine like terms: -9.625 + 0.25 = -9.375 0.25 + -1x + x2 = -9.375 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -9.375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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