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Simplifying 2w2 + -9w + 19 = (w + -5) + (w + -5) Reorder the terms: 19 + -9w + 2w2 = (w + -5) + (w + -5) Reorder the terms: 19 + -9w + 2w2 = (-5 + w) + (w + -5) Remove parenthesis around (-5 + w) 19 + -9w + 2w2 = -5 + w + (w + -5) Reorder the terms: 19 + -9w + 2w2 = -5 + w + (-5 + w) Remove parenthesis around (-5 + w) 19 + -9w + 2w2 = -5 + w + -5 + w Reorder the terms: 19 + -9w + 2w2 = -5 + -5 + w + w Combine like terms: -5 + -5 = -10 19 + -9w + 2w2 = -10 + w + w Combine like terms: w + w = 2w 19 + -9w + 2w2 = -10 + 2w Solving 19 + -9w + 2w2 = -10 + 2w Solving for variable 'w'. Reorder the terms: 19 + 10 + -9w + -2w + 2w2 = -10 + 2w + 10 + -2w Combine like terms: 19 + 10 = 29 29 + -9w + -2w + 2w2 = -10 + 2w + 10 + -2w Combine like terms: -9w + -2w = -11w 29 + -11w + 2w2 = -10 + 2w + 10 + -2w Reorder the terms: 29 + -11w + 2w2 = -10 + 10 + 2w + -2w Combine like terms: -10 + 10 = 0 29 + -11w + 2w2 = 0 + 2w + -2w 29 + -11w + 2w2 = 2w + -2w Combine like terms: 2w + -2w = 0 29 + -11w + 2w2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 14.5 + -5.5w + w2 = 0 Move the constant term to the right: Add '-14.5' to each side of the equation. 14.5 + -5.5w + -14.5 + w2 = 0 + -14.5 Reorder the terms: 14.5 + -14.5 + -5.5w + w2 = 0 + -14.5 Combine like terms: 14.5 + -14.5 = 0.0 0.0 + -5.5w + w2 = 0 + -14.5 -5.5w + w2 = 0 + -14.5 Combine like terms: 0 + -14.5 = -14.5 -5.5w + w2 = -14.5 The w term is -5.5w. Take half its coefficient (-2.75). Square it (7.5625) and add it to both sides. Add '7.5625' to each side of the equation. -5.5w + 7.5625 + w2 = -14.5 + 7.5625 Reorder the terms: 7.5625 + -5.5w + w2 = -14.5 + 7.5625 Combine like terms: -14.5 + 7.5625 = -6.9375 7.5625 + -5.5w + w2 = -6.9375 Factor a perfect square on the left side: (w + -2.75)(w + -2.75) = -6.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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