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Simplifying 9x2 + 80x + 760 = 0 Reorder the terms: 760 + 80x + 9x2 = 0 Solving 760 + 80x + 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'. 84.44444444 + 8.888888889x + x2 = 0 Move the constant term to the right: Add '-84.44444444' to each side of the equation. 84.44444444 + 8.888888889x + -84.44444444 + x2 = 0 + -84.44444444 Reorder the terms: 84.44444444 + -84.44444444 + 8.888888889x + x2 = 0 + -84.44444444 Combine like terms: 84.44444444 + -84.44444444 = 0.00000000 0.00000000 + 8.888888889x + x2 = 0 + -84.44444444 8.888888889x + x2 = 0 + -84.44444444 Combine like terms: 0 + -84.44444444 = -84.44444444 8.888888889x + x2 = -84.44444444 The x term is 8.888888889x. Take half its coefficient (4.444444445). Square it (19.75308642) and add it to both sides. Add '19.75308642' to each side of the equation. 8.888888889x + 19.75308642 + x2 = -84.44444444 + 19.75308642 Reorder the terms: 19.75308642 + 8.888888889x + x2 = -84.44444444 + 19.75308642 Combine like terms: -84.44444444 + 19.75308642 = -64.69135802 19.75308642 + 8.888888889x + x2 = -64.69135802 Factor a perfect square on the left side: (x + 4.444444445)(x + 4.444444445) = -64.69135802 Can't calculate square root of the right side. The solution to this equation could not be determined.
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