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Simplifying 8x2 + 4x + 0.5 = 0 Reorder the terms: 0.5 + 4x + 8x2 = 0 Solving 0.5 + 4x + 8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 0.0625 + 0.5x + x2 = 0 Move the constant term to the right: Add '-0.0625' to each side of the equation. 0.0625 + 0.5x + -0.0625 + x2 = 0 + -0.0625 Reorder the terms: 0.0625 + -0.0625 + 0.5x + x2 = 0 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + 0.5x + x2 = 0 + -0.0625 0.5x + x2 = 0 + -0.0625 Combine like terms: 0 + -0.0625 = -0.0625 0.5x + x2 = -0.0625 The x term is 0.5x. Take half its coefficient (0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. 0.5x + 0.0625 + x2 = -0.0625 + 0.0625 Reorder the terms: 0.0625 + 0.5x + x2 = -0.0625 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0625 + 0.5x + x2 = 0.0000 Factor a perfect square on the left side: (x + 0.25)(x + 0.25) = 0.0000 Calculate the square root of the right side: 0.0000 Break this problem into two subproblems by setting (x + 0.25) equal to 0.0000 and 0.0000.Subproblem 1
x + 0.25 = 0.0000 Simplifying x + 0.25 = 0.0000 Reorder the terms: 0.25 + x = 0.0000 Solving 0.25 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 0.0000 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 0.0000 + -0.25 x = 0.0000 + -0.25 Combine like terms: 0.0000 + -0.25 = -0.25 x = -0.25 Simplifying x = -0.25Subproblem 2
x + 0.25 = 0.0000 Simplifying x + 0.25 = 0.0000 Reorder the terms: 0.25 + x = 0.0000 Solving 0.25 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 0.0000 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 0.0000 + -0.25 x = 0.0000 + -0.25 Combine like terms: 0.0000 + -0.25 = -0.25 x = -0.25 Simplifying x = -0.25Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.25, -0.25}
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