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Simplifying 9x2 + -10x + -8 = 0 Reorder the terms: -8 + -10x + 9x2 = 0 Solving -8 + -10x + 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'. -0.8888888889 + -1.111111111x + x2 = 0 Move the constant term to the right: Add '0.8888888889' to each side of the equation. -0.8888888889 + -1.111111111x + 0.8888888889 + x2 = 0 + 0.8888888889 Reorder the terms: -0.8888888889 + 0.8888888889 + -1.111111111x + x2 = 0 + 0.8888888889 Combine like terms: -0.8888888889 + 0.8888888889 = 0.0000000000 0.0000000000 + -1.111111111x + x2 = 0 + 0.8888888889 -1.111111111x + x2 = 0 + 0.8888888889 Combine like terms: 0 + 0.8888888889 = 0.8888888889 -1.111111111x + x2 = 0.8888888889 The x term is -1.111111111x. Take half its coefficient (-0.5555555555). Square it (0.3086419752) and add it to both sides. Add '0.3086419752' to each side of the equation. -1.111111111x + 0.3086419752 + x2 = 0.8888888889 + 0.3086419752 Reorder the terms: 0.3086419752 + -1.111111111x + x2 = 0.8888888889 + 0.3086419752 Combine like terms: 0.8888888889 + 0.3086419752 = 1.1975308641 0.3086419752 + -1.111111111x + x2 = 1.1975308641 Factor a perfect square on the left side: (x + -0.5555555555)(x + -0.5555555555) = 1.1975308641 Calculate the square root of the right side: 1.094317533 Break this problem into two subproblems by setting (x + -0.5555555555) equal to 1.094317533 and -1.094317533.Subproblem 1
x + -0.5555555555 = 1.094317533 Simplifying x + -0.5555555555 = 1.094317533 Reorder the terms: -0.5555555555 + x = 1.094317533 Solving -0.5555555555 + x = 1.094317533 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5555555555' to each side of the equation. -0.5555555555 + 0.5555555555 + x = 1.094317533 + 0.5555555555 Combine like terms: -0.5555555555 + 0.5555555555 = 0.0000000000 0.0000000000 + x = 1.094317533 + 0.5555555555 x = 1.094317533 + 0.5555555555 Combine like terms: 1.094317533 + 0.5555555555 = 1.6498730885 x = 1.6498730885 Simplifying x = 1.6498730885Subproblem 2
x + -0.5555555555 = -1.094317533 Simplifying x + -0.5555555555 = -1.094317533 Reorder the terms: -0.5555555555 + x = -1.094317533 Solving -0.5555555555 + x = -1.094317533 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5555555555' to each side of the equation. -0.5555555555 + 0.5555555555 + x = -1.094317533 + 0.5555555555 Combine like terms: -0.5555555555 + 0.5555555555 = 0.0000000000 0.0000000000 + x = -1.094317533 + 0.5555555555 x = -1.094317533 + 0.5555555555 Combine like terms: -1.094317533 + 0.5555555555 = -0.5387619775 x = -0.5387619775 Simplifying x = -0.5387619775Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.6498730885, -0.5387619775}
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