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Simplifying 14X2 + X + -2 = 0 Reorder the terms: -2 + X + 14X2 = 0 Solving -2 + X + 14X2 = 0 Solving for variable 'X'. Begin completing the square. Divide all terms by 14 the coefficient of the squared term: Divide each side by '14'. -0.1428571429 + 0.07142857143X + X2 = 0 Move the constant term to the right: Add '0.1428571429' to each side of the equation. -0.1428571429 + 0.07142857143X + 0.1428571429 + X2 = 0 + 0.1428571429 Reorder the terms: -0.1428571429 + 0.1428571429 + 0.07142857143X + X2 = 0 + 0.1428571429 Combine like terms: -0.1428571429 + 0.1428571429 = 0.0000000000 0.0000000000 + 0.07142857143X + X2 = 0 + 0.1428571429 0.07142857143X + X2 = 0 + 0.1428571429 Combine like terms: 0 + 0.1428571429 = 0.1428571429 0.07142857143X + X2 = 0.1428571429 The X term is X. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.07142857143X + 0.25 + X2 = 0.1428571429 + 0.25 Reorder the terms: 0.25 + 0.07142857143X + X2 = 0.1428571429 + 0.25 Combine like terms: 0.1428571429 + 0.25 = 0.3928571429 0.25 + 0.07142857143X + X2 = 0.3928571429 Factor a perfect square on the left side: (X + 0.5)(X + 0.5) = 0.3928571429 Calculate the square root of the right side: 0.626783171 Break this problem into two subproblems by setting (X + 0.5) equal to 0.626783171 and -0.626783171.Subproblem 1
X + 0.5 = 0.626783171 Simplifying X + 0.5 = 0.626783171 Reorder the terms: 0.5 + X = 0.626783171 Solving 0.5 + X = 0.626783171 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + X = 0.626783171 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + X = 0.626783171 + -0.5 X = 0.626783171 + -0.5 Combine like terms: 0.626783171 + -0.5 = 0.126783171 X = 0.126783171 Simplifying X = 0.126783171Subproblem 2
X + 0.5 = -0.626783171 Simplifying X + 0.5 = -0.626783171 Reorder the terms: 0.5 + X = -0.626783171 Solving 0.5 + X = -0.626783171 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + X = -0.626783171 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + X = -0.626783171 + -0.5 X = -0.626783171 + -0.5 Combine like terms: -0.626783171 + -0.5 = -1.126783171 X = -1.126783171 Simplifying X = -1.126783171Solution
The solution to the problem is based on the solutions from the subproblems. X = {0.126783171, -1.126783171}
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