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Simplifying 1.6x2 + 2x + 2.5 = 0 Reorder the terms: 2.5 + 2x + 1.6x2 = 0 Solving 2.5 + 2x + 1.6x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 1.6 the coefficient of the squared term: Divide each side by '1.6'. 1.5625 + 1.25x + x2 = 0 Move the constant term to the right: Add '-1.5625' to each side of the equation. 1.5625 + 1.25x + -1.5625 + x2 = 0 + -1.5625 Reorder the terms: 1.5625 + -1.5625 + 1.25x + x2 = 0 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + 1.25x + x2 = 0 + -1.5625 1.25x + x2 = 0 + -1.5625 Combine like terms: 0 + -1.5625 = -1.5625 1.25x + x2 = -1.5625 The x term is 1.25x. Take half its coefficient (0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. 1.25x + 0.390625 + x2 = -1.5625 + 0.390625 Reorder the terms: 0.390625 + 1.25x + x2 = -1.5625 + 0.390625 Combine like terms: -1.5625 + 0.390625 = -1.171875 0.390625 + 1.25x + x2 = -1.171875 Factor a perfect square on the left side: (x + 0.625)(x + 0.625) = -1.171875 Can't calculate square root of the right side. The solution to this equation could not be determined.
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