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Simplifying 9x2 + -7x + 7 = 0 Reorder the terms: 7 + -7x + 9x2 = 0 Solving 7 + -7x + 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'. 0.7777777778 + -0.7777777778x + x2 = 0 Move the constant term to the right: Add '-0.7777777778' to each side of the equation. 0.7777777778 + -0.7777777778x + -0.7777777778 + x2 = 0 + -0.7777777778 Reorder the terms: 0.7777777778 + -0.7777777778 + -0.7777777778x + x2 = 0 + -0.7777777778 Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000 0.0000000000 + -0.7777777778x + x2 = 0 + -0.7777777778 -0.7777777778x + x2 = 0 + -0.7777777778 Combine like terms: 0 + -0.7777777778 = -0.7777777778 -0.7777777778x + x2 = -0.7777777778 The x term is -0.7777777778x. Take half its coefficient (-0.3888888889). Square it (0.1512345679) and add it to both sides. Add '0.1512345679' to each side of the equation. -0.7777777778x + 0.1512345679 + x2 = -0.7777777778 + 0.1512345679 Reorder the terms: 0.1512345679 + -0.7777777778x + x2 = -0.7777777778 + 0.1512345679 Combine like terms: -0.7777777778 + 0.1512345679 = -0.6265432099 0.1512345679 + -0.7777777778x + x2 = -0.6265432099 Factor a perfect square on the left side: (x + -0.3888888889)(x + -0.3888888889) = -0.6265432099 Can't calculate square root of the right side. The solution to this equation could not be determined.
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