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Simplifying x2 + 8x + 16 = -12 Reorder the terms: 16 + 8x + x2 = -12 Solving 16 + 8x + x2 = -12 Solving for variable 'x'. Reorder the terms: 16 + 12 + 8x + x2 = -12 + 12 Combine like terms: 16 + 12 = 28 28 + 8x + x2 = -12 + 12 Combine like terms: -12 + 12 = 0 28 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-28' to each side of the equation. 28 + 8x + -28 + x2 = 0 + -28 Reorder the terms: 28 + -28 + 8x + x2 = 0 + -28 Combine like terms: 28 + -28 = 0 0 + 8x + x2 = 0 + -28 8x + x2 = 0 + -28 Combine like terms: 0 + -28 = -28 8x + x2 = -28 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = -28 + 16 Reorder the terms: 16 + 8x + x2 = -28 + 16 Combine like terms: -28 + 16 = -12 16 + 8x + x2 = -12 Factor a perfect square on the left side: (x + 4)(x + 4) = -12 Can't calculate square root of the right side. The solution to this equation could not be determined.
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