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Simplifying 9x2 + -9x + -17 = 0 Reorder the terms: -17 + -9x + 9x2 = 0 Solving -17 + -9x + 9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -1.888888889 + -1x + x2 = 0 Move the constant term to the right: Add '1.888888889' to each side of the equation. -1.888888889 + -1x + 1.888888889 + x2 = 0 + 1.888888889 Reorder the terms: -1.888888889 + 1.888888889 + -1x + x2 = 0 + 1.888888889 Combine like terms: -1.888888889 + 1.888888889 = 0.000000000 0.000000000 + -1x + x2 = 0 + 1.888888889 -1x + x2 = 0 + 1.888888889 Combine like terms: 0 + 1.888888889 = 1.888888889 -1x + x2 = 1.888888889 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 1.888888889 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 1.888888889 + 0.25 Combine like terms: 1.888888889 + 0.25 = 2.138888889 0.25 + -1x + x2 = 2.138888889 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 2.138888889 Calculate the square root of the right side: 1.462494065 Break this problem into two subproblems by setting (x + -0.5) equal to 1.462494065 and -1.462494065.Subproblem 1
x + -0.5 = 1.462494065 Simplifying x + -0.5 = 1.462494065 Reorder the terms: -0.5 + x = 1.462494065 Solving -0.5 + x = 1.462494065 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.462494065 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.462494065 + 0.5 x = 1.462494065 + 0.5 Combine like terms: 1.462494065 + 0.5 = 1.962494065 x = 1.962494065 Simplifying x = 1.962494065Subproblem 2
x + -0.5 = -1.462494065 Simplifying x + -0.5 = -1.462494065 Reorder the terms: -0.5 + x = -1.462494065 Solving -0.5 + x = -1.462494065 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.462494065 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.462494065 + 0.5 x = -1.462494065 + 0.5 Combine like terms: -1.462494065 + 0.5 = -0.962494065 x = -0.962494065 Simplifying x = -0.962494065Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.962494065, -0.962494065}
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