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Simplifying x2 + 6x = -19 Reorder the terms: 6x + x2 = -19 Solving 6x + x2 = -19 Solving for variable 'x'. Reorder the terms: 19 + 6x + x2 = -19 + 19 Combine like terms: -19 + 19 = 0 19 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-19' to each side of the equation. 19 + 6x + -19 + x2 = 0 + -19 Reorder the terms: 19 + -19 + 6x + x2 = 0 + -19 Combine like terms: 19 + -19 = 0 0 + 6x + x2 = 0 + -19 6x + x2 = 0 + -19 Combine like terms: 0 + -19 = -19 6x + x2 = -19 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 = -19 + 9 Reorder the terms: 9 + 6x + x2 = -19 + 9 Combine like terms: -19 + 9 = -10 9 + 6x + x2 = -10 Factor a perfect square on the left side: (x + 3)(x + 3) = -10 Can't calculate square root of the right side. The solution to this equation could not be determined.
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