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Simplifying x6 + -19x3 + 216 = 0 Reorder the terms: 216 + -19x3 + x6 = 0 Solving 216 + -19x3 + x6 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-216' to each side of the equation. 216 + -19x3 + -216 + x6 = 0 + -216 Reorder the terms: 216 + -216 + -19x3 + x6 = 0 + -216 Combine like terms: 216 + -216 = 0 0 + -19x3 + x6 = 0 + -216 -19x3 + x6 = 0 + -216 Combine like terms: 0 + -216 = -216 -19x3 + x6 = -216 The x term is -19x3. Take half its coefficient (-9.5). Square it (90.25) and add it to both sides. Add '90.25' to each side of the equation. -19x3 + 90.25 + x6 = -216 + 90.25 Reorder the terms: 90.25 + -19x3 + x6 = -216 + 90.25 Combine like terms: -216 + 90.25 = -125.75 90.25 + -19x3 + x6 = -125.75 Factor a perfect square on the left side: (x3 + -9.5)(x3 + -9.5) = -125.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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