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Simplifying x2 + x + 1 = (2x + -1)(x + 3) Reorder the terms: 1 + x + x2 = (2x + -1)(x + 3) Reorder the terms: 1 + x + x2 = (-1 + 2x)(x + 3) Reorder the terms: 1 + x + x2 = (-1 + 2x)(3 + x) Multiply (-1 + 2x) * (3 + x) 1 + x + x2 = (-1(3 + x) + 2x * (3 + x)) 1 + x + x2 = ((3 * -1 + x * -1) + 2x * (3 + x)) 1 + x + x2 = ((-3 + -1x) + 2x * (3 + x)) 1 + x + x2 = (-3 + -1x + (3 * 2x + x * 2x)) 1 + x + x2 = (-3 + -1x + (6x + 2x2)) Combine like terms: -1x + 6x = 5x 1 + x + x2 = (-3 + 5x + 2x2) Solving 1 + x + x2 = -3 + 5x + 2x2 Solving for variable 'x'. Reorder the terms: 1 + 3 + x + -5x + x2 + -2x2 = -3 + 5x + 2x2 + 3 + -5x + -2x2 Combine like terms: 1 + 3 = 4 4 + x + -5x + x2 + -2x2 = -3 + 5x + 2x2 + 3 + -5x + -2x2 Combine like terms: x + -5x = -4x 4 + -4x + x2 + -2x2 = -3 + 5x + 2x2 + 3 + -5x + -2x2 Combine like terms: x2 + -2x2 = -1x2 4 + -4x + -1x2 = -3 + 5x + 2x2 + 3 + -5x + -2x2 Reorder the terms: 4 + -4x + -1x2 = -3 + 3 + 5x + -5x + 2x2 + -2x2 Combine like terms: -3 + 3 = 0 4 + -4x + -1x2 = 0 + 5x + -5x + 2x2 + -2x2 4 + -4x + -1x2 = 5x + -5x + 2x2 + -2x2 Combine like terms: 5x + -5x = 0 4 + -4x + -1x2 = 0 + 2x2 + -2x2 4 + -4x + -1x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 4 + -4x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -4 + 4x + x2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + 4x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + 4x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 4x + x2 = 0 + 4 4x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 4x + x2 = 4 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 4 + 4 Reorder the terms: 4 + 4x + x2 = 4 + 4 Combine like terms: 4 + 4 = 8 4 + 4x + x2 = 8 Factor a perfect square on the left side: (x + 2)(x + 2) = 8 Calculate the square root of the right side: 2.828427125 Break this problem into two subproblems by setting (x + 2) equal to 2.828427125 and -2.828427125.Subproblem 1
x + 2 = 2.828427125 Simplifying x + 2 = 2.828427125 Reorder the terms: 2 + x = 2.828427125 Solving 2 + x = 2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 2.828427125 + -2 Combine like terms: 2 + -2 = 0 0 + x = 2.828427125 + -2 x = 2.828427125 + -2 Combine like terms: 2.828427125 + -2 = 0.828427125 x = 0.828427125 Simplifying x = 0.828427125Subproblem 2
x + 2 = -2.828427125 Simplifying x + 2 = -2.828427125 Reorder the terms: 2 + x = -2.828427125 Solving 2 + x = -2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -2.828427125 + -2 Combine like terms: 2 + -2 = 0 0 + x = -2.828427125 + -2 x = -2.828427125 + -2 Combine like terms: -2.828427125 + -2 = -4.828427125 x = -4.828427125 Simplifying x = -4.828427125Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.828427125, -4.828427125}
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