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Simplifying 2x2 + 14x + 49 = 8 Reorder the terms: 49 + 14x + 2x2 = 8 Solving 49 + 14x + 2x2 = 8 Solving for variable 'x'. Reorder the terms: 49 + -8 + 14x + 2x2 = 8 + -8 Combine like terms: 49 + -8 = 41 41 + 14x + 2x2 = 8 + -8 Combine like terms: 8 + -8 = 0 41 + 14x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 20.5 + 7x + x2 = 0 Move the constant term to the right: Add '-20.5' to each side of the equation. 20.5 + 7x + -20.5 + x2 = 0 + -20.5 Reorder the terms: 20.5 + -20.5 + 7x + x2 = 0 + -20.5 Combine like terms: 20.5 + -20.5 = 0.0 0.0 + 7x + x2 = 0 + -20.5 7x + x2 = 0 + -20.5 Combine like terms: 0 + -20.5 = -20.5 7x + x2 = -20.5 The x term is 7x. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7x + 12.25 + x2 = -20.5 + 12.25 Reorder the terms: 12.25 + 7x + x2 = -20.5 + 12.25 Combine like terms: -20.5 + 12.25 = -8.25 12.25 + 7x + x2 = -8.25 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = -8.25 Can't calculate square root of the right side. The solution to this equation could not be determined.
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