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Simplifying 2x2 + 12x + -133 = 0 Reorder the terms: -133 + 12x + 2x2 = 0 Solving -133 + 12x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -66.5 + 6x + x2 = 0 Move the constant term to the right: Add '66.5' to each side of the equation. -66.5 + 6x + 66.5 + x2 = 0 + 66.5 Reorder the terms: -66.5 + 66.5 + 6x + x2 = 0 + 66.5 Combine like terms: -66.5 + 66.5 = 0.0 0.0 + 6x + x2 = 0 + 66.5 6x + x2 = 0 + 66.5 Combine like terms: 0 + 66.5 = 66.5 6x + x2 = 66.5 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 = 66.5 + 9 Reorder the terms: 9 + 6x + x2 = 66.5 + 9 Combine like terms: 66.5 + 9 = 75.5 9 + 6x + x2 = 75.5 Factor a perfect square on the left side: (x + 3)(x + 3) = 75.5 Calculate the square root of the right side: 8.689073598 Break this problem into two subproblems by setting (x + 3) equal to 8.689073598 and -8.689073598.Subproblem 1
x + 3 = 8.689073598 Simplifying x + 3 = 8.689073598 Reorder the terms: 3 + x = 8.689073598 Solving 3 + x = 8.689073598 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 = 8.689073598 + -3 Combine like terms: 3 + -3 = 0 0 + x = 8.689073598 + -3 x = 8.689073598 + -3 Combine like terms: 8.689073598 + -3 = 5.689073598 x = 5.689073598 Simplifying x = 5.689073598Subproblem 2
x + 3 = -8.689073598 Simplifying x + 3 = -8.689073598 Reorder the terms: 3 + x = -8.689073598 Solving 3 + x = -8.689073598 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 = -8.689073598 + -3 Combine like terms: 3 + -3 = 0 0 + x = -8.689073598 + -3 x = -8.689073598 + -3 Combine like terms: -8.689073598 + -3 = -11.689073598 x = -11.689073598 Simplifying x = -11.689073598Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.689073598, -11.689073598}
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