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Simplifying z4 + 4i * z2 + 5 = 0 Multiply i * z2 z4 + 4iz2 + 5 = 0 Reorder the terms: 5 + 4iz2 + z4 = 0 Solving 5 + 4iz2 + z4 = 0 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + 4iz2 + -5 + z4 = 0 + -5 Reorder the terms: 5 + -5 + 4iz2 + z4 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 4iz2 + z4 = 0 + -5 4iz2 + z4 = 0 + -5 Combine like terms: 0 + -5 = -5 4iz2 + z4 = -5 Add '-1z4' to each side of the equation. 4iz2 + z4 + -1z4 = -5 + -1z4 Combine like terms: z4 + -1z4 = 0 4iz2 + 0 = -5 + -1z4 4iz2 = -5 + -1z4 Divide each side by '4z2'. i = -1.25z-2 + -0.25z2 Simplifying i = -1.25z-2 + -0.25z2
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