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Simplifying 2w2 + -9w + 40 = 0 Reorder the terms: 40 + -9w + 2w2 = 0 Solving 40 + -9w + 2w2 = 0 Solving for variable 'w'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 20 + -4.5w + w2 = 0 Move the constant term to the right: Add '-20' to each side of the equation. 20 + -4.5w + -20 + w2 = 0 + -20 Reorder the terms: 20 + -20 + -4.5w + w2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -4.5w + w2 = 0 + -20 -4.5w + w2 = 0 + -20 Combine like terms: 0 + -20 = -20 -4.5w + w2 = -20 The w term is -4.5w. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5w + 5.0625 + w2 = -20 + 5.0625 Reorder the terms: 5.0625 + -4.5w + w2 = -20 + 5.0625 Combine like terms: -20 + 5.0625 = -14.9375 5.0625 + -4.5w + w2 = -14.9375 Factor a perfect square on the left side: (w + -2.25)(w + -2.25) = -14.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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