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Simplifying 9x2 + 68x + 159 = 0 Reorder the terms: 159 + 68x + 9x2 = 0 Solving 159 + 68x + 9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 17.66666667 + 7.555555556x + x2 = 0 Move the constant term to the right: Add '-17.66666667' to each side of the equation. 17.66666667 + 7.555555556x + -17.66666667 + x2 = 0 + -17.66666667 Reorder the terms: 17.66666667 + -17.66666667 + 7.555555556x + x2 = 0 + -17.66666667 Combine like terms: 17.66666667 + -17.66666667 = 0.00000000 0.00000000 + 7.555555556x + x2 = 0 + -17.66666667 7.555555556x + x2 = 0 + -17.66666667 Combine like terms: 0 + -17.66666667 = -17.66666667 7.555555556x + x2 = -17.66666667 The x term is 7.555555556x. Take half its coefficient (3.777777778). Square it (14.27160494) and add it to both sides. Add '14.27160494' to each side of the equation. 7.555555556x + 14.27160494 + x2 = -17.66666667 + 14.27160494 Reorder the terms: 14.27160494 + 7.555555556x + x2 = -17.66666667 + 14.27160494 Combine like terms: -17.66666667 + 14.27160494 = -3.39506173 14.27160494 + 7.555555556x + x2 = -3.39506173 Factor a perfect square on the left side: (x + 3.777777778)(x + 3.777777778) = -3.39506173 Can't calculate square root of the right side. The solution to this equation could not be determined.
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