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Simplifying 180 = X(X + -4) + 2(2 + -1X) Reorder the terms: 180 = X(-4 + X) + 2(2 + -1X) 180 = (-4 * X + X * X) + 2(2 + -1X) 180 = (-4X + X2) + 2(2 + -1X) 180 = -4X + X2 + (2 * 2 + -1X * 2) 180 = -4X + X2 + (4 + -2X) Reorder the terms: 180 = 4 + -4X + -2X + X2 Combine like terms: -4X + -2X = -6X 180 = 4 + -6X + X2 Solving 180 = 4 + -6X + X2 Solving for variable 'X'. Combine like terms: 180 + -4 = 176 176 + 6X + -1X2 = 4 + -6X + X2 + -4 + 6X + -1X2 Reorder the terms: 176 + 6X + -1X2 = 4 + -4 + -6X + 6X + X2 + -1X2 Combine like terms: 4 + -4 = 0 176 + 6X + -1X2 = 0 + -6X + 6X + X2 + -1X2 176 + 6X + -1X2 = -6X + 6X + X2 + -1X2 Combine like terms: -6X + 6X = 0 176 + 6X + -1X2 = 0 + X2 + -1X2 176 + 6X + -1X2 = X2 + -1X2 Combine like terms: X2 + -1X2 = 0 176 + 6X + -1X2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -176 + -6X + X2 = 0 Move the constant term to the right: Add '176' to each side of the equation. -176 + -6X + 176 + X2 = 0 + 176 Reorder the terms: -176 + 176 + -6X + X2 = 0 + 176 Combine like terms: -176 + 176 = 0 0 + -6X + X2 = 0 + 176 -6X + X2 = 0 + 176 Combine like terms: 0 + 176 = 176 -6X + X2 = 176 The X term is -6X. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6X + 9 + X2 = 176 + 9 Reorder the terms: 9 + -6X + X2 = 176 + 9 Combine like terms: 176 + 9 = 185 9 + -6X + X2 = 185 Factor a perfect square on the left side: (X + -3)(X + -3) = 185 Calculate the square root of the right side: 13.601470509 Break this problem into two subproblems by setting (X + -3) equal to 13.601470509 and -13.601470509.Subproblem 1
X + -3 = 13.601470509 Simplifying X + -3 = 13.601470509 Reorder the terms: -3 + X = 13.601470509 Solving -3 + X = 13.601470509 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + X = 13.601470509 + 3 Combine like terms: -3 + 3 = 0 0 + X = 13.601470509 + 3 X = 13.601470509 + 3 Combine like terms: 13.601470509 + 3 = 16.601470509 X = 16.601470509 Simplifying X = 16.601470509Subproblem 2
X + -3 = -13.601470509 Simplifying X + -3 = -13.601470509 Reorder the terms: -3 + X = -13.601470509 Solving -3 + X = -13.601470509 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + X = -13.601470509 + 3 Combine like terms: -3 + 3 = 0 0 + X = -13.601470509 + 3 X = -13.601470509 + 3 Combine like terms: -13.601470509 + 3 = -10.601470509 X = -10.601470509 Simplifying X = -10.601470509Solution
The solution to the problem is based on the solutions from the subproblems. X = {16.601470509, -10.601470509}
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