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Simplifying 2x2 + 23x + -9 = 0 Reorder the terms: -9 + 23x + 2x2 = 0 Solving -9 + 23x + 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'. -4.5 + 11.5x + x2 = 0 Move the constant term to the right: Add '4.5' to each side of the equation. -4.5 + 11.5x + 4.5 + x2 = 0 + 4.5 Reorder the terms: -4.5 + 4.5 + 11.5x + x2 = 0 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + 11.5x + x2 = 0 + 4.5 11.5x + x2 = 0 + 4.5 Combine like terms: 0 + 4.5 = 4.5 11.5x + x2 = 4.5 The x term is 11.5x. Take half its coefficient (5.75). Square it (33.0625) and add it to both sides. Add '33.0625' to each side of the equation. 11.5x + 33.0625 + x2 = 4.5 + 33.0625 Reorder the terms: 33.0625 + 11.5x + x2 = 4.5 + 33.0625 Combine like terms: 4.5 + 33.0625 = 37.5625 33.0625 + 11.5x + x2 = 37.5625 Factor a perfect square on the left side: (x + 5.75)(x + 5.75) = 37.5625 Calculate the square root of the right side: 6.128825336 Break this problem into two subproblems by setting (x + 5.75) equal to 6.128825336 and -6.128825336.Subproblem 1
x + 5.75 = 6.128825336 Simplifying x + 5.75 = 6.128825336 Reorder the terms: 5.75 + x = 6.128825336 Solving 5.75 + x = 6.128825336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + x = 6.128825336 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = 6.128825336 + -5.75 x = 6.128825336 + -5.75 Combine like terms: 6.128825336 + -5.75 = 0.378825336 x = 0.378825336 Simplifying x = 0.378825336Subproblem 2
x + 5.75 = -6.128825336 Simplifying x + 5.75 = -6.128825336 Reorder the terms: 5.75 + x = -6.128825336 Solving 5.75 + x = -6.128825336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + x = -6.128825336 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + x = -6.128825336 + -5.75 x = -6.128825336 + -5.75 Combine like terms: -6.128825336 + -5.75 = -11.878825336 x = -11.878825336 Simplifying x = -11.878825336Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.378825336, -11.878825336}
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