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Simplifying x(x + 1) = 2x + -11 Reorder the terms: x(1 + x) = 2x + -11 (1 * x + x * x) = 2x + -11 (1x + x2) = 2x + -11 Reorder the terms: 1x + x2 = -11 + 2x Solving 1x + x2 = -11 + 2x Solving for variable 'x'. Reorder the terms: 11 + 1x + -2x + x2 = -11 + 2x + 11 + -2x Combine like terms: 1x + -2x = -1x 11 + -1x + x2 = -11 + 2x + 11 + -2x Reorder the terms: 11 + -1x + x2 = -11 + 11 + 2x + -2x Combine like terms: -11 + 11 = 0 11 + -1x + x2 = 0 + 2x + -2x 11 + -1x + x2 = 2x + -2x Combine like terms: 2x + -2x = 0 11 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + -1x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + -1x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1x + x2 = 0 + -11 -1x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 -1x + x2 = -11 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = -11 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -11 + 0.25 Combine like terms: -11 + 0.25 = -10.75 0.25 + -1x + x2 = -10.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -10.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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