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Simplifying 4 + -2x(x + -1) = 3x + 5 Reorder the terms: 4 + -2x(-1 + x) = 3x + 5 4 + (-1 * -2x + x * -2x) = 3x + 5 4 + (2x + -2x2) = 3x + 5 Reorder the terms: 4 + 2x + -2x2 = 5 + 3x Solving 4 + 2x + -2x2 = 5 + 3x Solving for variable 'x'. Reorder the terms: 4 + -5 + 2x + -3x + -2x2 = 5 + 3x + -5 + -3x Combine like terms: 4 + -5 = -1 -1 + 2x + -3x + -2x2 = 5 + 3x + -5 + -3x Combine like terms: 2x + -3x = -1x -1 + -1x + -2x2 = 5 + 3x + -5 + -3x Reorder the terms: -1 + -1x + -2x2 = 5 + -5 + 3x + -3x Combine like terms: 5 + -5 = 0 -1 + -1x + -2x2 = 0 + 3x + -3x -1 + -1x + -2x2 = 3x + -3x Combine like terms: 3x + -3x = 0 -1 + -1x + -2x2 = 0 Factor out the Greatest Common Factor (GCF), '-1'. -1(1 + x + 2x2) = 0 Ignore the factor -1.Subproblem 1
Set the factor '(1 + x + 2x2)' equal to zero and attempt to solve: Simplifying 1 + x + 2x2 = 0 Solving 1 + x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 0.5 + 0.5x + x2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + 0.5x + -0.5 + x2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + 0.5x + x2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + 0.5x + x2 = 0 + -0.5 0.5x + x2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 0.5x + x2 = -0.5 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. 0.5x + 0.25 + x2 = -0.5 + 0.25 Reorder the terms: 0.25 + 0.5x + x2 = -0.5 + 0.25 Combine like terms: -0.5 + 0.25 = -0.25 0.25 + 0.5x + x2 = -0.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.25 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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