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Simplifying 4x2 + 23x + 56 = 0 Reorder the terms: 56 + 23x + 4x2 = 0 Solving 56 + 23x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 14 + 5.75x + x2 = 0 Move the constant term to the right: Add '-14' to each side of the equation. 14 + 5.75x + -14 + x2 = 0 + -14 Reorder the terms: 14 + -14 + 5.75x + x2 = 0 + -14 Combine like terms: 14 + -14 = 0 0 + 5.75x + x2 = 0 + -14 5.75x + x2 = 0 + -14 Combine like terms: 0 + -14 = -14 5.75x + x2 = -14 The x term is 5.75x. Take half its coefficient (2.875). Square it (8.265625) and add it to both sides. Add '8.265625' to each side of the equation. 5.75x + 8.265625 + x2 = -14 + 8.265625 Reorder the terms: 8.265625 + 5.75x + x2 = -14 + 8.265625 Combine like terms: -14 + 8.265625 = -5.734375 8.265625 + 5.75x + x2 = -5.734375 Factor a perfect square on the left side: (x + 2.875)(x + 2.875) = -5.734375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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