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Simplifying 9x2 + 2 = 12x Reorder the terms: 2 + 9x2 = 12x Solving 2 + 9x2 = 12x Solving for variable 'x'. Reorder the terms: 2 + -12x + 9x2 = 12x + -12x Combine like terms: 12x + -12x = 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 = 0.222222222 0.4444444442 + -1.333333333x + x2 = 0.222222222 Factor a perfect square on the left side: (x + -0.6666666665)(x + -0.6666666665) = 0.222222222 Calculate the square root of the right side: 0.471404521 Break this problem into two subproblems by setting (x + -0.6666666665) equal to 0.471404521 and -0.471404521.Subproblem 1
x + -0.6666666665 = 0.471404521 Simplifying x + -0.6666666665 = 0.471404521 Reorder the terms: -0.6666666665 + x = 0.471404521 Solving -0.6666666665 + x = 0.471404521 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 = 0.471404521 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 0.471404521 + 0.6666666665 x = 0.471404521 + 0.6666666665 Combine like terms: 0.471404521 + 0.6666666665 = 1.1380711875 x = 1.1380711875 Simplifying x = 1.1380711875Subproblem 2
x + -0.6666666665 = -0.471404521 Simplifying x + -0.6666666665 = -0.471404521 Reorder the terms: -0.6666666665 + x = -0.471404521 Solving -0.6666666665 + x = -0.471404521 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 = -0.471404521 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -0.471404521 + 0.6666666665 x = -0.471404521 + 0.6666666665 Combine like terms: -0.471404521 + 0.6666666665 = 0.1952621455 x = 0.1952621455 Simplifying x = 0.1952621455Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.1380711875, 0.1952621455}
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