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Simplifying -9x2 + 12x = -2 Reorder the terms: 12x + -9x2 = -2 Solving 12x + -9x2 = -2 Solving for variable 'x'. Reorder the terms: 2 + 12x + -9x2 = -2 + 2 Combine like terms: -2 + 2 = 0 2 + 12x + -9x2 = 0 Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. -0.2222222222 + -1.333333333x + x2 = 0 Move the constant term to the right: Add '0.2222222222' to each side of the equation. -0.2222222222 + -1.333333333x + 0.2222222222 + x2 = 0 + 0.2222222222 Reorder the terms: -0.2222222222 + 0.2222222222 + -1.333333333x + x2 = 0 + 0.2222222222 Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000 0.0000000000 + -1.333333333x + x2 = 0 + 0.2222222222 -1.333333333x + x2 = 0 + 0.2222222222 Combine like terms: 0 + 0.2222222222 = 0.2222222222 -1.333333333x + x2 = 0.2222222222 The x term is -1.333333333x. Take half its coefficient (-0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. -1.333333333x + 0.4444444442 + x2 = 0.2222222222 + 0.4444444442 Reorder the terms: 0.4444444442 + -1.333333333x + x2 = 0.2222222222 + 0.4444444442 Combine like terms: 0.2222222222 + 0.4444444442 = 0.6666666664 0.4444444442 + -1.333333333x + x2 = 0.6666666664 Factor a perfect square on the left side: (x + -0.6666666665)(x + -0.6666666665) = 0.6666666664 Calculate the square root of the right side: 0.816496581 Break this problem into two subproblems by setting (x + -0.6666666665) equal to 0.816496581 and -0.816496581.Subproblem 1
x + -0.6666666665 = 0.816496581 Simplifying x + -0.6666666665 = 0.816496581 Reorder the terms: -0.6666666665 + x = 0.816496581 Solving -0.6666666665 + x = 0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 0.816496581 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 0.816496581 + 0.6666666665 x = 0.816496581 + 0.6666666665 Combine like terms: 0.816496581 + 0.6666666665 = 1.4831632475 x = 1.4831632475 Simplifying x = 1.4831632475Subproblem 2
x + -0.6666666665 = -0.816496581 Simplifying x + -0.6666666665 = -0.816496581 Reorder the terms: -0.6666666665 + x = -0.816496581 Solving -0.6666666665 + x = -0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -0.816496581 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -0.816496581 + 0.6666666665 x = -0.816496581 + 0.6666666665 Combine like terms: -0.816496581 + 0.6666666665 = -0.1498299145 x = -0.1498299145 Simplifying x = -0.1498299145Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.4831632475, -0.1498299145}
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