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Simplifying z6 + -1z3 + 2 = 0 Reorder the terms: 2 + -1z3 + z6 = 0 Solving 2 + -1z3 + z6 = 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 + -1z3 + -2 + z6 = 0 + -2 Reorder the terms: 2 + -2 + -1z3 + z6 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1z3 + z6 = 0 + -2 -1z3 + z6 = 0 + -2 Combine like terms: 0 + -2 = -2 -1z3 + z6 = -2 The z term is -1z3. 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. -1z3 + 0.25 + z6 = -2 + 0.25 Reorder the terms: 0.25 + -1z3 + z6 = -2 + 0.25 Combine like terms: -2 + 0.25 = -1.75 0.25 + -1z3 + z6 = -1.75 Factor a perfect square on the left side: (z3 + -0.5)(z3 + -0.5) = -1.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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