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Simplifying ((x + 4)(x + 4)) = ((x + -2)(2x + -2)) Reorder the terms: ((4 + x)(x + 4)) = ((x + -2)(2x + -2)) Reorder the terms: ((4 + x)(4 + x)) = ((x + -2)(2x + -2)) Multiply (4 + x) * (4 + x) ((4(4 + x) + x(4 + x))) = ((x + -2)(2x + -2)) (((4 * 4 + x * 4) + x(4 + x))) = ((x + -2)(2x + -2)) (((16 + 4x) + x(4 + x))) = ((x + -2)(2x + -2)) ((16 + 4x + (4 * x + x * x))) = ((x + -2)(2x + -2)) ((16 + 4x + (4x + x2))) = ((x + -2)(2x + -2)) Combine like terms: 4x + 4x = 8x ((16 + 8x + x2)) = ((x + -2)(2x + -2)) (16 + 8x + x2) = ((x + -2)(2x + -2)) Remove parenthesis around (16 + 8x + x2) 16 + 8x + x2 = ((x + -2)(2x + -2)) Reorder the terms: 16 + 8x + x2 = ((-2 + x)(2x + -2)) Reorder the terms: 16 + 8x + x2 = ((-2 + x)(-2 + 2x)) Multiply (-2 + x) * (-2 + 2x) 16 + 8x + x2 = ((-2(-2 + 2x) + x(-2 + 2x))) 16 + 8x + x2 = (((-2 * -2 + 2x * -2) + x(-2 + 2x))) 16 + 8x + x2 = (((4 + -4x) + x(-2 + 2x))) 16 + 8x + x2 = ((4 + -4x + (-2 * x + 2x * x))) 16 + 8x + x2 = ((4 + -4x + (-2x + 2x2))) Combine like terms: -4x + -2x = -6x 16 + 8x + x2 = ((4 + -6x + 2x2)) 16 + 8x + x2 = (4 + -6x + 2x2) Remove parenthesis around (4 + -6x + 2x2) 16 + 8x + x2 = 4 + -6x + 2x2 Solving 16 + 8x + x2 = 4 + -6x + 2x2 Solving for variable 'x'. Reorder the terms: 16 + -4 + 8x + 6x + x2 + -2x2 = 4 + -6x + 2x2 + -4 + 6x + -2x2 Combine like terms: 16 + -4 = 12 12 + 8x + 6x + x2 + -2x2 = 4 + -6x + 2x2 + -4 + 6x + -2x2 Combine like terms: 8x + 6x = 14x 12 + 14x + x2 + -2x2 = 4 + -6x + 2x2 + -4 + 6x + -2x2 Combine like terms: x2 + -2x2 = -1x2 12 + 14x + -1x2 = 4 + -6x + 2x2 + -4 + 6x + -2x2 Reorder the terms: 12 + 14x + -1x2 = 4 + -4 + -6x + 6x + 2x2 + -2x2 Combine like terms: 4 + -4 = 0 12 + 14x + -1x2 = 0 + -6x + 6x + 2x2 + -2x2 12 + 14x + -1x2 = -6x + 6x + 2x2 + -2x2 Combine like terms: -6x + 6x = 0 12 + 14x + -1x2 = 0 + 2x2 + -2x2 12 + 14x + -1x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 12 + 14x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -12 + -14x + x2 = 0 Move the constant term to the right: Add '12' to each side of the equation. -12 + -14x + 12 + x2 = 0 + 12 Reorder the terms: -12 + 12 + -14x + x2 = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -14x + x2 = 0 + 12 -14x + x2 = 0 + 12 Combine like terms: 0 + 12 = 12 -14x + x2 = 12 The x term is -14x. Take half its coefficient (-7). Square it (49) and add it to both sides. Add '49' to each side of the equation. -14x + 49 + x2 = 12 + 49 Reorder the terms: 49 + -14x + x2 = 12 + 49 Combine like terms: 12 + 49 = 61 49 + -14x + x2 = 61 Factor a perfect square on the left side: (x + -7)(x + -7) = 61 Calculate the square root of the right side: 7.810249676 Break this problem into two subproblems by setting (x + -7) equal to 7.810249676 and -7.810249676.Subproblem 1
x + -7 = 7.810249676 Simplifying x + -7 = 7.810249676 Reorder the terms: -7 + x = 7.810249676 Solving -7 + x = 7.810249676 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 7.810249676 + 7 Combine like terms: -7 + 7 = 0 0 + x = 7.810249676 + 7 x = 7.810249676 + 7 Combine like terms: 7.810249676 + 7 = 14.810249676 x = 14.810249676 Simplifying x = 14.810249676Subproblem 2
x + -7 = -7.810249676 Simplifying x + -7 = -7.810249676 Reorder the terms: -7 + x = -7.810249676 Solving -7 + x = -7.810249676 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -7.810249676 + 7 Combine like terms: -7 + 7 = 0 0 + x = -7.810249676 + 7 x = -7.810249676 + 7 Combine like terms: -7.810249676 + 7 = -0.810249676 x = -0.810249676 Simplifying x = -0.810249676Solution
The solution to the problem is based on the solutions from the subproblems. x = {14.810249676, -0.810249676}
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