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Simplifying 9x2 + -16x + 39 = 0 Reorder the terms: 39 + -16x + 9x2 = 0 Solving 39 + -16x + 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'. 4.333333333 + -1.777777778x + x2 = 0 Move the constant term to the right: Add '-4.333333333' to each side of the equation. 4.333333333 + -1.777777778x + -4.333333333 + x2 = 0 + -4.333333333 Reorder the terms: 4.333333333 + -4.333333333 + -1.777777778x + x2 = 0 + -4.333333333 Combine like terms: 4.333333333 + -4.333333333 = 0.000000000 0.000000000 + -1.777777778x + x2 = 0 + -4.333333333 -1.777777778x + x2 = 0 + -4.333333333 Combine like terms: 0 + -4.333333333 = -4.333333333 -1.777777778x + x2 = -4.333333333 The x term is -1.777777778x. Take half its coefficient (-0.888888889). Square it (0.7901234570) and add it to both sides. Add '0.7901234570' to each side of the equation. -1.777777778x + 0.7901234570 + x2 = -4.333333333 + 0.7901234570 Reorder the terms: 0.7901234570 + -1.777777778x + x2 = -4.333333333 + 0.7901234570 Combine like terms: -4.333333333 + 0.7901234570 = -3.543209876 0.7901234570 + -1.777777778x + x2 = -3.543209876 Factor a perfect square on the left side: (x + -0.888888889)(x + -0.888888889) = -3.543209876 Can't calculate square root of the right side. The solution to this equation could not be determined.
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