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Simplifying -1(8x2 + -9x + 9) = 0 Reorder the terms: -1(9 + -9x + 8x2) = 0 (9 * -1 + -9x * -1 + 8x2 * -1) = 0 (-9 + 9x + -8x2) = 0 Solving -9 + 9x + -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'. 1.125 + -1.125x + x2 = 0 Move the constant term to the right: Add '-1.125' to each side of the equation. 1.125 + -1.125x + -1.125 + x2 = 0 + -1.125 Reorder the terms: 1.125 + -1.125 + -1.125x + x2 = 0 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + -1.125x + x2 = 0 + -1.125 -1.125x + x2 = 0 + -1.125 Combine like terms: 0 + -1.125 = -1.125 -1.125x + x2 = -1.125 The x term is -1.125x. Take half its coefficient (-0.5625). Square it (0.31640625) and add it to both sides. Add '0.31640625' to each side of the equation. -1.125x + 0.31640625 + x2 = -1.125 + 0.31640625 Reorder the terms: 0.31640625 + -1.125x + x2 = -1.125 + 0.31640625 Combine like terms: -1.125 + 0.31640625 = -0.80859375 0.31640625 + -1.125x + x2 = -0.80859375 Factor a perfect square on the left side: (x + -0.5625)(x + -0.5625) = -0.80859375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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