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Simplifying x2 + 6x + 140 = 0 Reorder the terms: 140 + 6x + x2 = 0 Solving 140 + 6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-140' to each side of the equation. 140 + 6x + -140 + x2 = 0 + -140 Reorder the terms: 140 + -140 + 6x + x2 = 0 + -140 Combine like terms: 140 + -140 = 0 0 + 6x + x2 = 0 + -140 6x + x2 = 0 + -140 Combine like terms: 0 + -140 = -140 6x + x2 = -140 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 = -140 + 9 Reorder the terms: 9 + 6x + x2 = -140 + 9 Combine like terms: -140 + 9 = -131 9 + 6x + x2 = -131 Factor a perfect square on the left side: (x + 3)(x + 3) = -131 Can't calculate square root of the right side. The solution to this equation could not be determined.
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