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Simplifying x + 8 = 2(x + -2) * x Reorder the terms: 8 + x = 2(x + -2) * x Reorder the terms: 8 + x = 2(-2 + x) * x Reorder the terms for easier multiplication: 8 + x = 2x(-2 + x) 8 + x = (-2 * 2x + x * 2x) 8 + x = (-4x + 2x2) Solving 8 + x = -4x + 2x2 Solving for variable 'x'. Combine like terms: x + 4x = 5x 8 + 5x + -2x2 = -4x + 2x2 + 4x + -2x2 Reorder the terms: 8 + 5x + -2x2 = -4x + 4x + 2x2 + -2x2 Combine like terms: -4x + 4x = 0 8 + 5x + -2x2 = 0 + 2x2 + -2x2 8 + 5x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 8 + 5x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -4 + -2.5x + x2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + -2.5x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + -2.5x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -2.5x + x2 = 0 + 4 -2.5x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 -2.5x + x2 = 4 The x term is -2.5x. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5x + 1.5625 + x2 = 4 + 1.5625 Reorder the terms: 1.5625 + -2.5x + x2 = 4 + 1.5625 Combine like terms: 4 + 1.5625 = 5.5625 1.5625 + -2.5x + x2 = 5.5625 Factor a perfect square on the left side: (x + -1.25)(x + -1.25) = 5.5625 Calculate the square root of the right side: 2.358495283 Break this problem into two subproblems by setting (x + -1.25) equal to 2.358495283 and -2.358495283.Subproblem 1
x + -1.25 = 2.358495283 Simplifying x + -1.25 = 2.358495283 Reorder the terms: -1.25 + x = 2.358495283 Solving -1.25 + x = 2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 2.358495283 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 2.358495283 + 1.25 x = 2.358495283 + 1.25 Combine like terms: 2.358495283 + 1.25 = 3.608495283 x = 3.608495283 Simplifying x = 3.608495283Subproblem 2
x + -1.25 = -2.358495283 Simplifying x + -1.25 = -2.358495283 Reorder the terms: -1.25 + x = -2.358495283 Solving -1.25 + x = -2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -2.358495283 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -2.358495283 + 1.25 x = -2.358495283 + 1.25 Combine like terms: -2.358495283 + 1.25 = -1.108495283 x = -1.108495283 Simplifying x = -1.108495283Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.608495283, -1.108495283}
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