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Simplifying Z4 + 2Z2 + 2 = 0 Reorder the terms: 2 + 2Z2 + Z4 = 0 Solving 2 + 2Z2 + Z4 = 0 Solving for variable 'Z'. Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + 2Z2 + -2 + Z4 = 0 + -2 Reorder the terms: 2 + -2 + 2Z2 + Z4 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 2Z2 + Z4 = 0 + -2 2Z2 + Z4 = 0 + -2 Combine like terms: 0 + -2 = -2 2Z2 + Z4 = -2 The Z term is 2Z2. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2Z2 + 1 + Z4 = -2 + 1 Reorder the terms: 1 + 2Z2 + Z4 = -2 + 1 Combine like terms: -2 + 1 = -1 1 + 2Z2 + Z4 = -1 Factor a perfect square on the left side: (Z2 + 1)(Z2 + 1) = -1 Can't calculate square root of the right side. The solution to this equation could not be determined.
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