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Simplifying 84x2 + 84x + 1 = 0 Reorder the terms: 1 + 84x + 84x2 = 0 Solving 1 + 84x + 84x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 84 the coefficient of the squared term: Divide each side by '84'. 0.0119047619 + x + x2 = 0 Move the constant term to the right: Add '-0.0119047619' to each side of the equation. 0.0119047619 + x + -0.0119047619 + x2 = 0 + -0.0119047619 Reorder the terms: 0.0119047619 + -0.0119047619 + x + x2 = 0 + -0.0119047619 Combine like terms: 0.0119047619 + -0.0119047619 = 0.0000000000 0.0000000000 + x + x2 = 0 + -0.0119047619 x + x2 = 0 + -0.0119047619 Combine like terms: 0 + -0.0119047619 = -0.0119047619 x + x2 = -0.0119047619 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. + 0.25 + x2 = -0.0119047619 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = -0.0119047619 + 0.25 Combine like terms: -0.0119047619 + 0.25 = 0.2380952381 1.25 + x2 = 0.2380952381 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 0.2380952381 Calculate the square root of the right side: 0.487950036 Break this problem into two subproblems by setting (x + 0.5) equal to 0.487950036 and -0.487950036.Subproblem 1
x + 0.5 = 0.487950036 Simplifying x + 0.5 = 0.487950036 Reorder the terms: 0.5 + x = 0.487950036 Solving 0.5 + x = 0.487950036 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 = 0.487950036 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.487950036 + -0.5 x = 0.487950036 + -0.5 Combine like terms: 0.487950036 + -0.5 = -0.012049964 x = -0.012049964 Simplifying x = -0.012049964Subproblem 2
x + 0.5 = -0.487950036 Simplifying x + 0.5 = -0.487950036 Reorder the terms: 0.5 + x = -0.487950036 Solving 0.5 + x = -0.487950036 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 = -0.487950036 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.487950036 + -0.5 x = -0.487950036 + -0.5 Combine like terms: -0.487950036 + -0.5 = -0.987950036 x = -0.987950036 Simplifying x = -0.987950036Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.012049964, -0.987950036}
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