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Simplifying x6 + 4x3 + 125 = 0 Reorder the terms: 125 + 4x3 + x6 = 0 Solving 125 + 4x3 + x6 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-125' to each side of the equation. 125 + 4x3 + -125 + x6 = 0 + -125 Reorder the terms: 125 + -125 + 4x3 + x6 = 0 + -125 Combine like terms: 125 + -125 = 0 0 + 4x3 + x6 = 0 + -125 4x3 + x6 = 0 + -125 Combine like terms: 0 + -125 = -125 4x3 + x6 = -125 The x term is 4x3. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x3 + 4 + x6 = -125 + 4 Reorder the terms: 4 + 4x3 + x6 = -125 + 4 Combine like terms: -125 + 4 = -121 4 + 4x3 + x6 = -121 Factor a perfect square on the left side: (x3 + 2)(x3 + 2) = -121 Can't calculate square root of the right side. The solution to this equation could not be determined.
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