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Simplifying x2 + 3x + 13 = 0 Reorder the terms: 13 + 3x + x2 = 0 Solving 13 + 3x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-13' to each side of the equation. 13 + 3x + -13 + x2 = 0 + -13 Reorder the terms: 13 + -13 + 3x + x2 = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 3x + x2 = 0 + -13 3x + x2 = 0 + -13 Combine like terms: 0 + -13 = -13 3x + x2 = -13 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = -13 + 2.25 Reorder the terms: 2.25 + 3x + x2 = -13 + 2.25 Combine like terms: -13 + 2.25 = -10.75 2.25 + 3x + x2 = -10.75 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = -10.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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