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Simplifying -35 + 9x + -18x2 = 0 Solving -35 + 9x + -18x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -18 the coefficient of the squared term: Divide each side by '-18'. 1.944444444 + -0.5x + x2 = 0 Move the constant term to the right: Add '-1.944444444' to each side of the equation. 1.944444444 + -0.5x + -1.944444444 + x2 = 0 + -1.944444444 Reorder the terms: 1.944444444 + -1.944444444 + -0.5x + x2 = 0 + -1.944444444 Combine like terms: 1.944444444 + -1.944444444 = 0.000000000 0.000000000 + -0.5x + x2 = 0 + -1.944444444 -0.5x + x2 = 0 + -1.944444444 Combine like terms: 0 + -1.944444444 = -1.944444444 -0.5x + x2 = -1.944444444 The x term is -0.5x. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5x + 0.0625 + x2 = -1.944444444 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = -1.944444444 + 0.0625 Combine like terms: -1.944444444 + 0.0625 = -1.881944444 0.0625 + -0.5x + x2 = -1.881944444 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = -1.881944444 Can't calculate square root of the right side. The solution to this equation could not be determined.
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