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Simplifying x = (x + -2)(2x + -4) Reorder the terms: x = (-2 + x)(2x + -4) Reorder the terms: x = (-2 + x)(-4 + 2x) Multiply (-2 + x) * (-4 + 2x) x = (-2(-4 + 2x) + x(-4 + 2x)) x = ((-4 * -2 + 2x * -2) + x(-4 + 2x)) x = ((8 + -4x) + x(-4 + 2x)) x = (8 + -4x + (-4 * x + 2x * x)) x = (8 + -4x + (-4x + 2x2)) Combine like terms: -4x + -4x = -8x x = (8 + -8x + 2x2) Solving x = 8 + -8x + 2x2 Solving for variable 'x'. Reorder the terms: -8 + x + 8x + -2x2 = 8 + -8x + 2x2 + -8 + 8x + -2x2 Combine like terms: x + 8x = 9x -8 + 9x + -2x2 = 8 + -8x + 2x2 + -8 + 8x + -2x2 Reorder the terms: -8 + 9x + -2x2 = 8 + -8 + -8x + 8x + 2x2 + -2x2 Combine like terms: 8 + -8 = 0 -8 + 9x + -2x2 = 0 + -8x + 8x + 2x2 + -2x2 -8 + 9x + -2x2 = -8x + 8x + 2x2 + -2x2 Combine like terms: -8x + 8x = 0 -8 + 9x + -2x2 = 0 + 2x2 + -2x2 -8 + 9x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -8 + 9x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. 4 + -4.5x + x2 = 0 Move the constant term to the right: Add '-4' to each side of the equation. 4 + -4.5x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + -4.5x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -4.5x + x2 = 0 + -4 -4.5x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 -4.5x + x2 = -4 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = -4 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = -4 + 5.0625 Combine like terms: -4 + 5.0625 = 1.0625 5.0625 + -4.5x + x2 = 1.0625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 1.0625 Calculate the square root of the right side: 1.030776406 Break this problem into two subproblems by setting (x + -2.25) equal to 1.030776406 and -1.030776406.Subproblem 1
x + -2.25 = 1.030776406 Simplifying x + -2.25 = 1.030776406 Reorder the terms: -2.25 + x = 1.030776406 Solving -2.25 + x = 1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 1.030776406 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 1.030776406 + 2.25 x = 1.030776406 + 2.25 Combine like terms: 1.030776406 + 2.25 = 3.280776406 x = 3.280776406 Simplifying x = 3.280776406Subproblem 2
x + -2.25 = -1.030776406 Simplifying x + -2.25 = -1.030776406 Reorder the terms: -2.25 + x = -1.030776406 Solving -2.25 + x = -1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -1.030776406 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -1.030776406 + 2.25 x = -1.030776406 + 2.25 Combine like terms: -1.030776406 + 2.25 = 1.219223594 x = 1.219223594 Simplifying x = 1.219223594Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.280776406, 1.219223594}
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