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Simplifying 0.81x2 + -1.4x + 1 = 0 Reorder the terms: 1 + -1.4x + 0.81x2 = 0 Solving 1 + -1.4x + 0.81x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.81 the coefficient of the squared term: Divide each side by '0.81'. 1.234567901 + -1.728395062x + x2 = 0 Move the constant term to the right: Add '-1.234567901' to each side of the equation. 1.234567901 + -1.728395062x + -1.234567901 + x2 = 0 + -1.234567901 Reorder the terms: 1.234567901 + -1.234567901 + -1.728395062x + x2 = 0 + -1.234567901 Combine like terms: 1.234567901 + -1.234567901 = 0.000000000 0.000000000 + -1.728395062x + x2 = 0 + -1.234567901 -1.728395062x + x2 = 0 + -1.234567901 Combine like terms: 0 + -1.234567901 = -1.234567901 -1.728395062x + x2 = -1.234567901 The x term is -1.728395062x. Take half its coefficient (-0.864197531). Square it (0.7468373726) and add it to both sides. Add '0.7468373726' to each side of the equation. -1.728395062x + 0.7468373726 + x2 = -1.234567901 + 0.7468373726 Reorder the terms: 0.7468373726 + -1.728395062x + x2 = -1.234567901 + 0.7468373726 Combine like terms: -1.234567901 + 0.7468373726 = -0.4877305284 0.7468373726 + -1.728395062x + x2 = -0.4877305284 Factor a perfect square on the left side: (x + -0.864197531)(x + -0.864197531) = -0.4877305284 Can't calculate square root of the right side. The solution to this equation could not be determined.
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