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Simplifying 2x(x + -4) = (1 + -1x)(x + 2) Reorder the terms: 2x(-4 + x) = (1 + -1x)(x + 2) (-4 * 2x + x * 2x) = (1 + -1x)(x + 2) (-8x + 2x2) = (1 + -1x)(x + 2) Reorder the terms: -8x + 2x2 = (1 + -1x)(2 + x) Multiply (1 + -1x) * (2 + x) -8x + 2x2 = (1(2 + x) + -1x * (2 + x)) -8x + 2x2 = ((2 * 1 + x * 1) + -1x * (2 + x)) -8x + 2x2 = ((2 + 1x) + -1x * (2 + x)) -8x + 2x2 = (2 + 1x + (2 * -1x + x * -1x)) -8x + 2x2 = (2 + 1x + (-2x + -1x2)) Combine like terms: 1x + -2x = -1x -8x + 2x2 = (2 + -1x + -1x2) Solving -8x + 2x2 = 2 + -1x + -1x2 Solving for variable 'x'. Reorder the terms: -2 + -8x + x + 2x2 + x2 = 2 + -1x + -1x2 + -2 + x + x2 Combine like terms: -8x + x = -7x -2 + -7x + 2x2 + x2 = 2 + -1x + -1x2 + -2 + x + x2 Combine like terms: 2x2 + x2 = 3x2 -2 + -7x + 3x2 = 2 + -1x + -1x2 + -2 + x + x2 Reorder the terms: -2 + -7x + 3x2 = 2 + -2 + -1x + x + -1x2 + x2 Combine like terms: 2 + -2 = 0 -2 + -7x + 3x2 = 0 + -1x + x + -1x2 + x2 -2 + -7x + 3x2 = -1x + x + -1x2 + x2 Combine like terms: -1x + x = 0 -2 + -7x + 3x2 = 0 + -1x2 + x2 -2 + -7x + 3x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 -2 + -7x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -0.6666666667 + -2.333333333x + x2 = 0 Move the constant term to the right: Add '0.6666666667' to each side of the equation. -0.6666666667 + -2.333333333x + 0.6666666667 + x2 = 0 + 0.6666666667 Reorder the terms: -0.6666666667 + 0.6666666667 + -2.333333333x + x2 = 0 + 0.6666666667 Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000 0.0000000000 + -2.333333333x + x2 = 0 + 0.6666666667 -2.333333333x + x2 = 0 + 0.6666666667 Combine like terms: 0 + 0.6666666667 = 0.6666666667 -2.333333333x + x2 = 0.6666666667 The x term is -2.333333333x. Take half its coefficient (-1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. -2.333333333x + 1.361111112 + x2 = 0.6666666667 + 1.361111112 Reorder the terms: 1.361111112 + -2.333333333x + x2 = 0.6666666667 + 1.361111112 Combine like terms: 0.6666666667 + 1.361111112 = 2.0277777787 1.361111112 + -2.333333333x + x2 = 2.0277777787 Factor a perfect square on the left side: (x + -1.166666667)(x + -1.166666667) = 2.0277777787 Calculate the square root of the right side: 1.424000625 Break this problem into two subproblems by setting (x + -1.166666667) equal to 1.424000625 and -1.424000625.Subproblem 1
x + -1.166666667 = 1.424000625 Simplifying x + -1.166666667 = 1.424000625 Reorder the terms: -1.166666667 + x = 1.424000625 Solving -1.166666667 + x = 1.424000625 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = 1.424000625 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 1.424000625 + 1.166666667 x = 1.424000625 + 1.166666667 Combine like terms: 1.424000625 + 1.166666667 = 2.590667292 x = 2.590667292 Simplifying x = 2.590667292Subproblem 2
x + -1.166666667 = -1.424000625 Simplifying x + -1.166666667 = -1.424000625 Reorder the terms: -1.166666667 + x = -1.424000625 Solving -1.166666667 + x = -1.424000625 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = -1.424000625 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -1.424000625 + 1.166666667 x = -1.424000625 + 1.166666667 Combine like terms: -1.424000625 + 1.166666667 = -0.257333958 x = -0.257333958 Simplifying x = -0.257333958Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.590667292, -0.257333958}
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