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Simplifying 2l2 + 14l + 49 = 0 Reorder the terms: 49 + 14l + 2l2 = 0 Solving 49 + 14l + 2l2 = 0 Solving for variable 'l'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 24.5 + 7l + l2 = 0 Move the constant term to the right: Add '-24.5' to each side of the equation. 24.5 + 7l + -24.5 + l2 = 0 + -24.5 Reorder the terms: 24.5 + -24.5 + 7l + l2 = 0 + -24.5 Combine like terms: 24.5 + -24.5 = 0.0 0.0 + 7l + l2 = 0 + -24.5 7l + l2 = 0 + -24.5 Combine like terms: 0 + -24.5 = -24.5 7l + l2 = -24.5 The l term is 7l. 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. 7l + 12.25 + l2 = -24.5 + 12.25 Reorder the terms: 12.25 + 7l + l2 = -24.5 + 12.25 Combine like terms: -24.5 + 12.25 = -12.25 12.25 + 7l + l2 = -12.25 Factor a perfect square on the left side: (l + 3.5)(l + 3.5) = -12.25 Can't calculate square root of the right side. The solution to this equation could not be determined.
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