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Simplifying 9x2 = 6 + -4x Solving 9x2 = 6 + -4x Solving for variable 'x'. Reorder the terms: -6 + 4x + 9x2 = 6 + -4x + -6 + 4x Reorder the terms: -6 + 4x + 9x2 = 6 + -6 + -4x + 4x Combine like terms: 6 + -6 = 0 -6 + 4x + 9x2 = 0 + -4x + 4x -6 + 4x + 9x2 = -4x + 4x Combine like terms: -4x + 4x = 0 -6 + 4x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -0.6666666667 + 0.4444444444x + x2 = 0 Move the constant term to the right: Add '0.6666666667' to each side of the equation. -0.6666666667 + 0.4444444444x + 0.6666666667 + x2 = 0 + 0.6666666667 Reorder the terms: -0.6666666667 + 0.6666666667 + 0.4444444444x + x2 = 0 + 0.6666666667 Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000 0.0000000000 + 0.4444444444x + x2 = 0 + 0.6666666667 0.4444444444x + x2 = 0 + 0.6666666667 Combine like terms: 0 + 0.6666666667 = 0.6666666667 0.4444444444x + x2 = 0.6666666667 The x term is 0.4444444444x. Take half its coefficient (0.2222222222). Square it (0.04938271604) and add it to both sides. Add '0.04938271604' to each side of the equation. 0.4444444444x + 0.04938271604 + x2 = 0.6666666667 + 0.04938271604 Reorder the terms: 0.04938271604 + 0.4444444444x + x2 = 0.6666666667 + 0.04938271604 Combine like terms: 0.6666666667 + 0.04938271604 = 0.71604938274 0.04938271604 + 0.4444444444x + x2 = 0.71604938274 Factor a perfect square on the left side: (x + 0.2222222222)(x + 0.2222222222) = 0.71604938274 Calculate the square root of the right side: 0.846197012 Break this problem into two subproblems by setting (x + 0.2222222222) equal to 0.846197012 and -0.846197012.Subproblem 1
x + 0.2222222222 = 0.846197012 Simplifying x + 0.2222222222 = 0.846197012 Reorder the terms: 0.2222222222 + x = 0.846197012 Solving 0.2222222222 + x = 0.846197012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = 0.846197012 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = 0.846197012 + -0.2222222222 x = 0.846197012 + -0.2222222222 Combine like terms: 0.846197012 + -0.2222222222 = 0.6239747898 x = 0.6239747898 Simplifying x = 0.6239747898Subproblem 2
x + 0.2222222222 = -0.846197012 Simplifying x + 0.2222222222 = -0.846197012 Reorder the terms: 0.2222222222 + x = -0.846197012 Solving 0.2222222222 + x = -0.846197012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = -0.846197012 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = -0.846197012 + -0.2222222222 x = -0.846197012 + -0.2222222222 Combine like terms: -0.846197012 + -0.2222222222 = -1.0684192342 x = -1.0684192342 Simplifying x = -1.0684192342Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.6239747898, -1.0684192342}
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