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Simplifying x2 + 12x = -100 Reorder the terms: 12x + x2 = -100 Solving 12x + x2 = -100 Solving for variable 'x'. Reorder the terms: 100 + 12x + x2 = -100 + 100 Combine like terms: -100 + 100 = 0 100 + 12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-100' to each side of the equation. 100 + 12x + -100 + x2 = 0 + -100 Reorder the terms: 100 + -100 + 12x + x2 = 0 + -100 Combine like terms: 100 + -100 = 0 0 + 12x + x2 = 0 + -100 12x + x2 = 0 + -100 Combine like terms: 0 + -100 = -100 12x + x2 = -100 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = -100 + 36 Reorder the terms: 36 + 12x + x2 = -100 + 36 Combine like terms: -100 + 36 = -64 36 + 12x + x2 = -64 Factor a perfect square on the left side: (x + 6)(x + 6) = -64 Can't calculate square root of the right side. The solution to this equation could not be determined.
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