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Simplifying 4x2 + -22x + 9 = 0 Reorder the terms: 9 + -22x + 4x2 = 0 Solving 9 + -22x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 2.25 + -5.5x + x2 = 0 Move the constant term to the right: Add '-2.25' to each side of the equation. 2.25 + -5.5x + -2.25 + x2 = 0 + -2.25 Reorder the terms: 2.25 + -2.25 + -5.5x + x2 = 0 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + -5.5x + x2 = 0 + -2.25 -5.5x + x2 = 0 + -2.25 Combine like terms: 0 + -2.25 = -2.25 -5.5x + x2 = -2.25 The x term is -5.5x. Take half its coefficient (-2.75). Square it (7.5625) and add it to both sides. Add '7.5625' to each side of the equation. -5.5x + 7.5625 + x2 = -2.25 + 7.5625 Reorder the terms: 7.5625 + -5.5x + x2 = -2.25 + 7.5625 Combine like terms: -2.25 + 7.5625 = 5.3125 7.5625 + -5.5x + x2 = 5.3125 Factor a perfect square on the left side: (x + -2.75)(x + -2.75) = 5.3125 Calculate the square root of the right side: 2.304886114 Break this problem into two subproblems by setting (x + -2.75) equal to 2.304886114 and -2.304886114.Subproblem 1
x + -2.75 = 2.304886114 Simplifying x + -2.75 = 2.304886114 Reorder the terms: -2.75 + x = 2.304886114 Solving -2.75 + x = 2.304886114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = 2.304886114 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = 2.304886114 + 2.75 x = 2.304886114 + 2.75 Combine like terms: 2.304886114 + 2.75 = 5.054886114 x = 5.054886114 Simplifying x = 5.054886114Subproblem 2
x + -2.75 = -2.304886114 Simplifying x + -2.75 = -2.304886114 Reorder the terms: -2.75 + x = -2.304886114 Solving -2.75 + x = -2.304886114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = -2.304886114 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = -2.304886114 + 2.75 x = -2.304886114 + 2.75 Combine like terms: -2.304886114 + 2.75 = 0.445113886 x = 0.445113886 Simplifying x = 0.445113886Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.054886114, 0.445113886}
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