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Simplifying D4 + D2 + 16 = 0 Reorder the terms: 16 + D2 + D4 = 0 Solving 16 + D2 + D4 = 0 Solving for variable 'D'. Begin completing the square. Move the constant term to the right: Add '-16' to each side of the equation. 16 + D2 + -16 + D4 = 0 + -16 Reorder the terms: 16 + -16 + D2 + D4 = 0 + -16 Combine like terms: 16 + -16 = 0 0 + D2 + D4 = 0 + -16 D2 + D4 = 0 + -16 Combine like terms: 0 + -16 = -16 D2 + D4 = -16 The D term is D2. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. D2 + 0.25 + D4 = -16 + 0.25 Reorder the terms: 0.25 + D2 + D4 = -16 + 0.25 Combine like terms: -16 + 0.25 = -15.75 0.25 + D2 + D4 = -15.75 Factor a perfect square on the left side: (D2 + 0.5)(D2 + 0.5) = -15.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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