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Simplifying 9x2 + 26x + 20 = 0 Reorder the terms: 20 + 26x + 9x2 = 0 Solving 20 + 26x + 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'. 2.222222222 + 2.888888889x + x2 = 0 Move the constant term to the right: Add '-2.222222222' to each side of the equation. 2.222222222 + 2.888888889x + -2.222222222 + x2 = 0 + -2.222222222 Reorder the terms: 2.222222222 + -2.222222222 + 2.888888889x + x2 = 0 + -2.222222222 Combine like terms: 2.222222222 + -2.222222222 = 0.000000000 0.000000000 + 2.888888889x + x2 = 0 + -2.222222222 2.888888889x + x2 = 0 + -2.222222222 Combine like terms: 0 + -2.222222222 = -2.222222222 2.888888889x + x2 = -2.222222222 The x term is 2.888888889x. Take half its coefficient (1.444444445). Square it (2.086419755) and add it to both sides. Add '2.086419755' to each side of the equation. 2.888888889x + 2.086419755 + x2 = -2.222222222 + 2.086419755 Reorder the terms: 2.086419755 + 2.888888889x + x2 = -2.222222222 + 2.086419755 Combine like terms: -2.222222222 + 2.086419755 = -0.135802467 2.086419755 + 2.888888889x + x2 = -0.135802467 Factor a perfect square on the left side: (x + 1.444444445)(x + 1.444444445) = -0.135802467 Can't calculate square root of the right side. The solution to this equation could not be determined.
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