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Simplifying x2 + -18x + 385 = 0 Reorder the terms: 385 + -18x + x2 = 0 Solving 385 + -18x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-385' to each side of the equation. 385 + -18x + -385 + x2 = 0 + -385 Reorder the terms: 385 + -385 + -18x + x2 = 0 + -385 Combine like terms: 385 + -385 = 0 0 + -18x + x2 = 0 + -385 -18x + x2 = 0 + -385 Combine like terms: 0 + -385 = -385 -18x + x2 = -385 The x term is -18x. Take half its coefficient (-9). Square it (81) and add it to both sides. Add '81' to each side of the equation. -18x + 81 + x2 = -385 + 81 Reorder the terms: 81 + -18x + x2 = -385 + 81 Combine like terms: -385 + 81 = -304 81 + -18x + x2 = -304 Factor a perfect square on the left side: (x + -9)(x + -9) = -304 Can't calculate square root of the right side. The solution to this equation could not be determined.
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