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Simplifying 8x2 + -1x + -8 = 0 Reorder the terms: -8 + -1x + 8x2 = 0 Solving -8 + -1x + 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'. -1 + -0.125x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -0.125x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -0.125x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -0.125x + x2 = 0 + 1 -0.125x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -0.125x + x2 = 1 The x term is -0.125x. Take half its coefficient (-0.0625). Square it (0.00390625) and add it to both sides. Add '0.00390625' to each side of the equation. -0.125x + 0.00390625 + x2 = 1 + 0.00390625 Reorder the terms: 0.00390625 + -0.125x + x2 = 1 + 0.00390625 Combine like terms: 1 + 0.00390625 = 1.00390625 0.00390625 + -0.125x + x2 = 1.00390625 Factor a perfect square on the left side: (x + -0.0625)(x + -0.0625) = 1.00390625 Calculate the square root of the right side: 1.001951221 Break this problem into two subproblems by setting (x + -0.0625) equal to 1.001951221 and -1.001951221.Subproblem 1
x + -0.0625 = 1.001951221 Simplifying x + -0.0625 = 1.001951221 Reorder the terms: -0.0625 + x = 1.001951221 Solving -0.0625 + x = 1.001951221 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = 1.001951221 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = 1.001951221 + 0.0625 x = 1.001951221 + 0.0625 Combine like terms: 1.001951221 + 0.0625 = 1.064451221 x = 1.064451221 Simplifying x = 1.064451221Subproblem 2
x + -0.0625 = -1.001951221 Simplifying x + -0.0625 = -1.001951221 Reorder the terms: -0.0625 + x = -1.001951221 Solving -0.0625 + x = -1.001951221 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = -1.001951221 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = -1.001951221 + 0.0625 x = -1.001951221 + 0.0625 Combine like terms: -1.001951221 + 0.0625 = -0.939451221 x = -0.939451221 Simplifying x = -0.939451221Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.064451221, -0.939451221}
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