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Simplifying -20x2 + -1x + 5 = 0 Reorder the terms: 5 + -1x + -20x2 = 0 Solving 5 + -1x + -20x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -20 the coefficient of the squared term: Divide each side by '-20'. -0.25 + 0.05x + x2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + 0.05x + 0.25 + x2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + 0.05x + x2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + 0.05x + x2 = 0 + 0.25 0.05x + x2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 0.05x + x2 = 0.25 The x term is 0.05x. Take half its coefficient (0.025). Square it (0.000625) and add it to both sides. Add '0.000625' to each side of the equation. 0.05x + 0.000625 + x2 = 0.25 + 0.000625 Reorder the terms: 0.000625 + 0.05x + x2 = 0.25 + 0.000625 Combine like terms: 0.25 + 0.000625 = 0.250625 0.000625 + 0.05x + x2 = 0.250625 Factor a perfect square on the left side: (x + 0.025)(x + 0.025) = 0.250625 Calculate the square root of the right side: 0.50062461 Break this problem into two subproblems by setting (x + 0.025) equal to 0.50062461 and -0.50062461.Subproblem 1
x + 0.025 = 0.50062461 Simplifying x + 0.025 = 0.50062461 Reorder the terms: 0.025 + x = 0.50062461 Solving 0.025 + x = 0.50062461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.025' to each side of the equation. 0.025 + -0.025 + x = 0.50062461 + -0.025 Combine like terms: 0.025 + -0.025 = 0.000 0.000 + x = 0.50062461 + -0.025 x = 0.50062461 + -0.025 Combine like terms: 0.50062461 + -0.025 = 0.47562461 x = 0.47562461 Simplifying x = 0.47562461Subproblem 2
x + 0.025 = -0.50062461 Simplifying x + 0.025 = -0.50062461 Reorder the terms: 0.025 + x = -0.50062461 Solving 0.025 + x = -0.50062461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.025' to each side of the equation. 0.025 + -0.025 + x = -0.50062461 + -0.025 Combine like terms: 0.025 + -0.025 = 0.000 0.000 + x = -0.50062461 + -0.025 x = -0.50062461 + -0.025 Combine like terms: -0.50062461 + -0.025 = -0.52562461 x = -0.52562461 Simplifying x = -0.52562461Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.47562461, -0.52562461}
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