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Simplifying x2 + -1.6x + 1 = 0 Reorder the terms: 1 + -1.6x + x2 = 0 Solving 1 + -1.6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + -1.6x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -1.6x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1.6x + x2 = 0 + -1 -1.6x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -1.6x + x2 = -1 The x term is -1.6x. Take half its coefficient (-0.8). Square it (0.64) and add it to both sides. Add '0.64' to each side of the equation. -1.6x + 0.64 + x2 = -1 + 0.64 Reorder the terms: 0.64 + -1.6x + x2 = -1 + 0.64 Combine like terms: -1 + 0.64 = -0.36 0.64 + -1.6x + x2 = -0.36 Factor a perfect square on the left side: (x + -0.8)(x + -0.8) = -0.36 Can't calculate square root of the right side. The solution to this equation could not be determined.
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