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Simplifying 9x2 + -11x + -6 = 0 Reorder the terms: -6 + -11x + 9x2 = 0 Solving -6 + -11x + 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'. -0.6666666667 + -1.222222222x + x2 = 0 Move the constant term to the right: Add '0.6666666667' to each side of the equation. -0.6666666667 + -1.222222222x + 0.6666666667 + x2 = 0 + 0.6666666667 Reorder the terms: -0.6666666667 + 0.6666666667 + -1.222222222x + x2 = 0 + 0.6666666667 Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000 0.0000000000 + -1.222222222x + x2 = 0 + 0.6666666667 -1.222222222x + x2 = 0 + 0.6666666667 Combine like terms: 0 + 0.6666666667 = 0.6666666667 -1.222222222x + x2 = 0.6666666667 The x term is -1.222222222x. Take half its coefficient (-0.611111111). Square it (0.3734567900) and add it to both sides. Add '0.3734567900' to each side of the equation. -1.222222222x + 0.3734567900 + x2 = 0.6666666667 + 0.3734567900 Reorder the terms: 0.3734567900 + -1.222222222x + x2 = 0.6666666667 + 0.3734567900 Combine like terms: 0.6666666667 + 0.3734567900 = 1.0401234567 0.3734567900 + -1.222222222x + x2 = 1.0401234567 Factor a perfect square on the left side: (x + -0.611111111)(x + -0.611111111) = 1.0401234567 Calculate the square root of the right side: 1.019864431 Break this problem into two subproblems by setting (x + -0.611111111) equal to 1.019864431 and -1.019864431.Subproblem 1
x + -0.611111111 = 1.019864431 Simplifying x + -0.611111111 = 1.019864431 Reorder the terms: -0.611111111 + x = 1.019864431 Solving -0.611111111 + x = 1.019864431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.611111111' to each side of the equation. -0.611111111 + 0.611111111 + x = 1.019864431 + 0.611111111 Combine like terms: -0.611111111 + 0.611111111 = 0.000000000 0.000000000 + x = 1.019864431 + 0.611111111 x = 1.019864431 + 0.611111111 Combine like terms: 1.019864431 + 0.611111111 = 1.630975542 x = 1.630975542 Simplifying x = 1.630975542Subproblem 2
x + -0.611111111 = -1.019864431 Simplifying x + -0.611111111 = -1.019864431 Reorder the terms: -0.611111111 + x = -1.019864431 Solving -0.611111111 + x = -1.019864431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.611111111' to each side of the equation. -0.611111111 + 0.611111111 + x = -1.019864431 + 0.611111111 Combine like terms: -0.611111111 + 0.611111111 = 0.000000000 0.000000000 + x = -1.019864431 + 0.611111111 x = -1.019864431 + 0.611111111 Combine like terms: -1.019864431 + 0.611111111 = -0.40875332 x = -0.40875332 Simplifying x = -0.40875332Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.630975542, -0.40875332}
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