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Simplifying x2 + x + 18 = -8 + 4 Reorder the terms: 18 + x + x2 = -8 + 4 Combine like terms: -8 + 4 = -4 18 + x + x2 = -4 Solving 18 + x + x2 = -4 Solving for variable 'x'. Reorder the terms: 18 + 4 + x + x2 = -4 + 4 Combine like terms: 18 + 4 = 22 22 + x + x2 = -4 + 4 Combine like terms: -4 + 4 = 0 22 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-22' to each side of the equation. 22 + x + -22 + x2 = 0 + -22 Reorder the terms: 22 + -22 + x + x2 = 0 + -22 Combine like terms: 22 + -22 = 0 0 + x + x2 = 0 + -22 x + x2 = 0 + -22 Combine like terms: 0 + -22 = -22 x + x2 = -22 The x term is x. 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. x + 0.25 + x2 = -22 + 0.25 Reorder the terms: 0.25 + x + x2 = -22 + 0.25 Combine like terms: -22 + 0.25 = -21.75 0.25 + x + x2 = -21.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -21.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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