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Simplifying 0.3x2 + x + 1 = 0 Reorder the terms: 1 + x + 0.3x2 = 0 Solving 1 + x + 0.3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.3 the coefficient of the squared term: Divide each side by '0.3'. 3.333333333 + 3.333333333x + x2 = 0 Move the constant term to the right: Add '-3.333333333' to each side of the equation. 3.333333333 + 3.333333333x + -3.333333333 + x2 = 0 + -3.333333333 Reorder the terms: 3.333333333 + -3.333333333 + 3.333333333x + x2 = 0 + -3.333333333 Combine like terms: 3.333333333 + -3.333333333 = 0.000000000 0.000000000 + 3.333333333x + x2 = 0 + -3.333333333 3.333333333x + x2 = 0 + -3.333333333 Combine like terms: 0 + -3.333333333 = -3.333333333 3.333333333x + x2 = -3.333333333 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 3.333333333x + 0.25 + x2 = -3.333333333 + 0.25 Reorder the terms: 0.25 + 3.333333333x + x2 = -3.333333333 + 0.25 Combine like terms: -3.333333333 + 0.25 = -3.083333333 0.25 + 3.333333333x + x2 = -3.083333333 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -3.083333333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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