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Simplifying x2 + 6x + 9 = -8 Reorder the terms: 9 + 6x + x2 = -8 Solving 9 + 6x + x2 = -8 Solving for variable 'x'. Reorder the terms: 9 + 8 + 6x + x2 = -8 + 8 Combine like terms: 9 + 8 = 17 17 + 6x + x2 = -8 + 8 Combine like terms: -8 + 8 = 0 17 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-17' to each side of the equation. 17 + 6x + -17 + x2 = 0 + -17 Reorder the terms: 17 + -17 + 6x + x2 = 0 + -17 Combine like terms: 17 + -17 = 0 0 + 6x + x2 = 0 + -17 6x + x2 = 0 + -17 Combine like terms: 0 + -17 = -17 6x + x2 = -17 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = -17 + 9 Reorder the terms: 9 + 6x + x2 = -17 + 9 Combine like terms: -17 + 9 = -8 9 + 6x + x2 = -8 Factor a perfect square on the left side: (x + 3)(x + 3) = -8 Can't calculate square root of the right side. The solution to this equation could not be determined.
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