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Simplifying 2x2 + -22x + -11 = 0 Reorder the terms: -11 + -22x + 2x2 = 0 Solving -11 + -22x + 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'. -5.5 + -11x + x2 = 0 Move the constant term to the right: Add '5.5' to each side of the equation. -5.5 + -11x + 5.5 + x2 = 0 + 5.5 Reorder the terms: -5.5 + 5.5 + -11x + x2 = 0 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + -11x + x2 = 0 + 5.5 -11x + x2 = 0 + 5.5 Combine like terms: 0 + 5.5 = 5.5 -11x + x2 = 5.5 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 = 5.5 + 30.25 Reorder the terms: 30.25 + -11x + x2 = 5.5 + 30.25 Combine like terms: 5.5 + 30.25 = 35.75 30.25 + -11x + x2 = 35.75 Factor a perfect square on the left side: (x + -5.5)(x + -5.5) = 35.75 Calculate the square root of the right side: 5.979130372 Break this problem into two subproblems by setting (x + -5.5) equal to 5.979130372 and -5.979130372.Subproblem 1
x + -5.5 = 5.979130372 Simplifying x + -5.5 = 5.979130372 Reorder the terms: -5.5 + x = 5.979130372 Solving -5.5 + x = 5.979130372 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 = 5.979130372 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.979130372 + 5.5 x = 5.979130372 + 5.5 Combine like terms: 5.979130372 + 5.5 = 11.479130372 x = 11.479130372 Simplifying x = 11.479130372Subproblem 2
x + -5.5 = -5.979130372 Simplifying x + -5.5 = -5.979130372 Reorder the terms: -5.5 + x = -5.979130372 Solving -5.5 + x = -5.979130372 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 = -5.979130372 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.979130372 + 5.5 x = -5.979130372 + 5.5 Combine like terms: -5.979130372 + 5.5 = -0.479130372 x = -0.479130372 Simplifying x = -0.479130372Solution
The solution to the problem is based on the solutions from the subproblems. x = {11.479130372, -0.479130372}
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