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Simplifying (X + -4)(X + -4) = 5 Reorder the terms: (-4 + X)(X + -4) = 5 Reorder the terms: (-4 + X)(-4 + X) = 5 Multiply (-4 + X) * (-4 + X) (-4(-4 + X) + X(-4 + X)) = 5 ((-4 * -4 + X * -4) + X(-4 + X)) = 5 ((16 + -4X) + X(-4 + X)) = 5 (16 + -4X + (-4 * X + X * X)) = 5 (16 + -4X + (-4X + X2)) = 5 Combine like terms: -4X + -4X = -8X (16 + -8X + X2) = 5 Solving 16 + -8X + X2 = 5 Solving for variable 'X'. Reorder the terms: 16 + -5 + -8X + X2 = 5 + -5 Combine like terms: 16 + -5 = 11 11 + -8X + X2 = 5 + -5 Combine like terms: 5 + -5 = 0 11 + -8X + X2 = 0 Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + -8X + -11 + X2 = 0 + -11 Reorder the terms: 11 + -11 + -8X + X2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -8X + X2 = 0 + -11 -8X + X2 = 0 + -11 Combine like terms: 0 + -11 = -11 -8X + X2 = -11 The X term is -8X. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8X + 16 + X2 = -11 + 16 Reorder the terms: 16 + -8X + X2 = -11 + 16 Combine like terms: -11 + 16 = 5 16 + -8X + X2 = 5 Factor a perfect square on the left side: (X + -4)(X + -4) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (X + -4) equal to 2.236067978 and -2.236067978.Subproblem 1
X + -4 = 2.236067978 Simplifying X + -4 = 2.236067978 Reorder the terms: -4 + X = 2.236067978 Solving -4 + X = 2.236067978 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + X = 2.236067978 + 4 Combine like terms: -4 + 4 = 0 0 + X = 2.236067978 + 4 X = 2.236067978 + 4 Combine like terms: 2.236067978 + 4 = 6.236067978 X = 6.236067978 Simplifying X = 6.236067978Subproblem 2
X + -4 = -2.236067978 Simplifying X + -4 = -2.236067978 Reorder the terms: -4 + X = -2.236067978 Solving -4 + X = -2.236067978 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + X = -2.236067978 + 4 Combine like terms: -4 + 4 = 0 0 + X = -2.236067978 + 4 X = -2.236067978 + 4 Combine like terms: -2.236067978 + 4 = 1.763932022 X = 1.763932022 Simplifying X = 1.763932022Solution
The solution to the problem is based on the solutions from the subproblems. X = {6.236067978, 1.763932022}
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