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Simplifying 1.5625x2 + -2x + 1 = 0 Reorder the terms: 1 + -2x + 1.5625x2 = 0 Solving 1 + -2x + 1.5625x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 1.5625 the coefficient of the squared term: Divide each side by '1.5625'. 0.64 + -1.28x + x2 = 0 Move the constant term to the right: Add '-0.64' to each side of the equation. 0.64 + -1.28x + -0.64 + x2 = 0 + -0.64 Reorder the terms: 0.64 + -0.64 + -1.28x + x2 = 0 + -0.64 Combine like terms: 0.64 + -0.64 = 0.00 0.00 + -1.28x + x2 = 0 + -0.64 -1.28x + x2 = 0 + -0.64 Combine like terms: 0 + -0.64 = -0.64 -1.28x + x2 = -0.64 The x term is -1.28x. Take half its coefficient (-0.64). Square it (0.4096) and add it to both sides. Add '0.4096' to each side of the equation. -1.28x + 0.4096 + x2 = -0.64 + 0.4096 Reorder the terms: 0.4096 + -1.28x + x2 = -0.64 + 0.4096 Combine like terms: -0.64 + 0.4096 = -0.2304 0.4096 + -1.28x + x2 = -0.2304 Factor a perfect square on the left side: (x + -0.64)(x + -0.64) = -0.2304 Can't calculate square root of the right side. The solution to this equation could not be determined.
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