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Simplifying 3x = (x + 1)(x + 3) + 8 Reorder the terms: 3x = (1 + x)(x + 3) + 8 Reorder the terms: 3x = (1 + x)(3 + x) + 8 Multiply (1 + x) * (3 + x) 3x = (1(3 + x) + x(3 + x)) + 8 3x = ((3 * 1 + x * 1) + x(3 + x)) + 8 3x = ((3 + 1x) + x(3 + x)) + 8 3x = (3 + 1x + (3 * x + x * x)) + 8 3x = (3 + 1x + (3x + x2)) + 8 Combine like terms: 1x + 3x = 4x 3x = (3 + 4x + x2) + 8 Reorder the terms: 3x = 3 + 8 + 4x + x2 Combine like terms: 3 + 8 = 11 3x = 11 + 4x + x2 Solving 3x = 11 + 4x + x2 Solving for variable 'x'. Reorder the terms: -11 + 3x + -4x + -1x2 = 11 + 4x + x2 + -11 + -4x + -1x2 Combine like terms: 3x + -4x = -1x -11 + -1x + -1x2 = 11 + 4x + x2 + -11 + -4x + -1x2 Reorder the terms: -11 + -1x + -1x2 = 11 + -11 + 4x + -4x + x2 + -1x2 Combine like terms: 11 + -11 = 0 -11 + -1x + -1x2 = 0 + 4x + -4x + x2 + -1x2 -11 + -1x + -1x2 = 4x + -4x + x2 + -1x2 Combine like terms: 4x + -4x = 0 -11 + -1x + -1x2 = 0 + x2 + -1x2 -11 + -1x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -11 + -1x + -1x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(11 + x + x2) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(11 + x + x2)' equal to zero and attempt to solve: Simplifying 11 + x + x2 = 0 Solving 11 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + x + x2 = 0 + -11 x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 x + x2 = -11 The x term is x. 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. x + 0.25 + x2 = -11 + 0.25 Reorder the terms: 0.25 + x + x2 = -11 + 0.25 Combine like terms: -11 + 0.25 = -10.75 0.25 + x + 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. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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