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Simplifying -0.231x2 + x + -2.16 = 0 Reorder the terms: -2.16 + x + -0.231x2 = 0 Solving -2.16 + x + -0.231x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -0.231 the coefficient of the squared term: Divide each side by '-0.231'. 9.350649351 + -4.329004329x + x2 = 0 Move the constant term to the right: Add '-9.350649351' to each side of the equation. 9.350649351 + -4.329004329x + -9.350649351 + x2 = 0 + -9.350649351 Reorder the terms: 9.350649351 + -9.350649351 + -4.329004329x + x2 = 0 + -9.350649351 Combine like terms: 9.350649351 + -9.350649351 = 0.000000000 0.000000000 + -4.329004329x + x2 = 0 + -9.350649351 -4.329004329x + x2 = 0 + -9.350649351 Combine like terms: 0 + -9.350649351 = -9.350649351 -4.329004329x + x2 = -9.350649351 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. -4.329004329x + 0.25 + x2 = -9.350649351 + 0.25 Reorder the terms: 0.25 + -4.329004329x + x2 = -9.350649351 + 0.25 Combine like terms: -9.350649351 + 0.25 = -9.100649351 0.25 + -4.329004329x + x2 = -9.100649351 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -9.100649351 Can't calculate square root of the right side. The solution to this equation could not be determined.
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