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Simplifying 8x2 + -8 = 5x Reorder the terms: -8 + 8x2 = 5x Solving -8 + 8x2 = 5x Solving for variable 'x'. Reorder the terms: -8 + -5x + 8x2 = 5x + -5x Combine like terms: 5x + -5x = 0 -8 + -5x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -1 + -0.625x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -0.625x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -0.625x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -0.625x + x2 = 0 + 1 -0.625x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -0.625x + x2 = 1 The x term is -0.625x. Take half its coefficient (-0.3125). Square it (0.09765625) and add it to both sides. Add '0.09765625' to each side of the equation. -0.625x + 0.09765625 + x2 = 1 + 0.09765625 Reorder the terms: 0.09765625 + -0.625x + x2 = 1 + 0.09765625 Combine like terms: 1 + 0.09765625 = 1.09765625 0.09765625 + -0.625x + x2 = 1.09765625 Factor a perfect square on the left side: (x + -0.3125)(x + -0.3125) = 1.09765625 Calculate the square root of the right side: 1.047690913 Break this problem into two subproblems by setting (x + -0.3125) equal to 1.047690913 and -1.047690913.Subproblem 1
x + -0.3125 = 1.047690913 Simplifying x + -0.3125 = 1.047690913 Reorder the terms: -0.3125 + x = 1.047690913 Solving -0.3125 + x = 1.047690913 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = 1.047690913 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = 1.047690913 + 0.3125 x = 1.047690913 + 0.3125 Combine like terms: 1.047690913 + 0.3125 = 1.360190913 x = 1.360190913 Simplifying x = 1.360190913Subproblem 2
x + -0.3125 = -1.047690913 Simplifying x + -0.3125 = -1.047690913 Reorder the terms: -0.3125 + x = -1.047690913 Solving -0.3125 + x = -1.047690913 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = -1.047690913 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = -1.047690913 + 0.3125 x = -1.047690913 + 0.3125 Combine like terms: -1.047690913 + 0.3125 = -0.735190913 x = -0.735190913 Simplifying x = -0.735190913Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.360190913, -0.735190913}
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