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Simplifying 3x4 + -3x2 + 28 = 0 Reorder the terms: 28 + -3x2 + 3x4 = 0 Solving 28 + -3x2 + 3x4 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 9.333333333 + -1x2 + x4 = 0 Move the constant term to the right: Add '-9.333333333' to each side of the equation. 9.333333333 + -1x2 + -9.333333333 + x4 = 0 + -9.333333333 Reorder the terms: 9.333333333 + -9.333333333 + -1x2 + x4 = 0 + -9.333333333 Combine like terms: 9.333333333 + -9.333333333 = 0.000000000 0.000000000 + -1x2 + x4 = 0 + -9.333333333 -1x2 + x4 = 0 + -9.333333333 Combine like terms: 0 + -9.333333333 = -9.333333333 -1x2 + x4 = -9.333333333 The x term is -1x2. 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. -1x2 + 0.25 + x4 = -9.333333333 + 0.25 Reorder the terms: 0.25 + -1x2 + x4 = -9.333333333 + 0.25 Combine like terms: -9.333333333 + 0.25 = -9.083333333 0.25 + -1x2 + x4 = -9.083333333 Factor a perfect square on the left side: (x2 + -0.5)(x2 + -0.5) = -9.083333333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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