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Simplifying -1x2 + 11x = 12 Reorder the terms: 11x + -1x2 = 12 Solving 11x + -1x2 = 12 Solving for variable 'x'. Reorder the terms: -12 + 11x + -1x2 = 12 + -12 Combine like terms: 12 + -12 = 0 -12 + 11x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 12 + -11x + x2 = 0 Move the constant term to the right: Add '-12' to each side of the equation. 12 + -11x + -12 + x2 = 0 + -12 Reorder the terms: 12 + -12 + -11x + x2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -11x + x2 = 0 + -12 -11x + x2 = 0 + -12 Combine like terms: 0 + -12 = -12 -11x + x2 = -12 The x term is -11x. Take half its coefficient (-5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. -11x + 30.25 + x2 = -12 + 30.25 Reorder the terms: 30.25 + -11x + x2 = -12 + 30.25 Combine like terms: -12 + 30.25 = 18.25 30.25 + -11x + x2 = 18.25 Factor a perfect square on the left side: (x + -5.5)(x + -5.5) = 18.25 Calculate the square root of the right side: 4.272001873 Break this problem into two subproblems by setting (x + -5.5) equal to 4.272001873 and -4.272001873.Subproblem 1
x + -5.5 = 4.272001873 Simplifying x + -5.5 = 4.272001873 Reorder the terms: -5.5 + x = 4.272001873 Solving -5.5 + x = 4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 4.272001873 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 4.272001873 + 5.5 x = 4.272001873 + 5.5 Combine like terms: 4.272001873 + 5.5 = 9.772001873 x = 9.772001873 Simplifying x = 9.772001873Subproblem 2
x + -5.5 = -4.272001873 Simplifying x + -5.5 = -4.272001873 Reorder the terms: -5.5 + x = -4.272001873 Solving -5.5 + x = -4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -4.272001873 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -4.272001873 + 5.5 x = -4.272001873 + 5.5 Combine like terms: -4.272001873 + 5.5 = 1.227998127 x = 1.227998127 Simplifying x = 1.227998127Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.772001873, 1.227998127}
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