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Simplifying x2 + 8x + 30 = 0 Reorder the terms: 30 + 8x + x2 = 0 Solving 30 + 8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-30' to each side of the equation. 30 + 8x + -30 + x2 = 0 + -30 Reorder the terms: 30 + -30 + 8x + x2 = 0 + -30 Combine like terms: 30 + -30 = 0 0 + 8x + x2 = 0 + -30 8x + x2 = 0 + -30 Combine like terms: 0 + -30 = -30 8x + x2 = -30 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 = -30 + 16 Reorder the terms: 16 + 8x + x2 = -30 + 16 Combine like terms: -30 + 16 = -14 16 + 8x + x2 = -14 Factor a perfect square on the left side: (x + 4)(x + 4) = -14 Can't calculate square root of the right side. The solution to this equation could not be determined.
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