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Simplifying 9x2 + 8x + 16 = 0 Reorder the terms: 16 + 8x + 9x2 = 0 Solving 16 + 8x + 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'. 1.777777778 + 0.8888888889x + x2 = 0 Move the constant term to the right: Add '-1.777777778' to each side of the equation. 1.777777778 + 0.8888888889x + -1.777777778 + x2 = 0 + -1.777777778 Reorder the terms: 1.777777778 + -1.777777778 + 0.8888888889x + x2 = 0 + -1.777777778 Combine like terms: 1.777777778 + -1.777777778 = 0.000000000 0.000000000 + 0.8888888889x + x2 = 0 + -1.777777778 0.8888888889x + x2 = 0 + -1.777777778 Combine like terms: 0 + -1.777777778 = -1.777777778 0.8888888889x + x2 = -1.777777778 The x term is 0.8888888889x. Take half its coefficient (0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. 0.8888888889x + 0.1975308642 + x2 = -1.777777778 + 0.1975308642 Reorder the terms: 0.1975308642 + 0.8888888889x + x2 = -1.777777778 + 0.1975308642 Combine like terms: -1.777777778 + 0.1975308642 = -1.5802469138 0.1975308642 + 0.8888888889x + x2 = -1.5802469138 Factor a perfect square on the left side: (x + 0.4444444445)(x + 0.4444444445) = -1.5802469138 Can't calculate square root of the right side. The solution to this equation could not be determined.
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