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Simplifying 8x2 + 8x + -4 = -6x + -5 Reorder the terms: -4 + 8x + 8x2 = -6x + -5 Reorder the terms: -4 + 8x + 8x2 = -5 + -6x Solving -4 + 8x + 8x2 = -5 + -6x Solving for variable 'x'. Reorder the terms: -4 + 5 + 8x + 6x + 8x2 = -5 + -6x + 5 + 6x Combine like terms: -4 + 5 = 1 1 + 8x + 6x + 8x2 = -5 + -6x + 5 + 6x Combine like terms: 8x + 6x = 14x 1 + 14x + 8x2 = -5 + -6x + 5 + 6x Reorder the terms: 1 + 14x + 8x2 = -5 + 5 + -6x + 6x Combine like terms: -5 + 5 = 0 1 + 14x + 8x2 = 0 + -6x + 6x 1 + 14x + 8x2 = -6x + 6x Combine like terms: -6x + 6x = 0 1 + 14x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 0.125 + 1.75x + x2 = 0 Move the constant term to the right: Add '-0.125' to each side of the equation. 0.125 + 1.75x + -0.125 + x2 = 0 + -0.125 Reorder the terms: 0.125 + -0.125 + 1.75x + x2 = 0 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + 1.75x + x2 = 0 + -0.125 1.75x + x2 = 0 + -0.125 Combine like terms: 0 + -0.125 = -0.125 1.75x + x2 = -0.125 The x term is 1.75x. Take half its coefficient (0.875). Square it (0.765625) and add it to both sides. Add '0.765625' to each side of the equation. 1.75x + 0.765625 + x2 = -0.125 + 0.765625 Reorder the terms: 0.765625 + 1.75x + x2 = -0.125 + 0.765625 Combine like terms: -0.125 + 0.765625 = 0.640625 0.765625 + 1.75x + x2 = 0.640625 Factor a perfect square on the left side: (x + 0.875)(x + 0.875) = 0.640625 Calculate the square root of the right side: 0.80039053 Break this problem into two subproblems by setting (x + 0.875) equal to 0.80039053 and -0.80039053.Subproblem 1
x + 0.875 = 0.80039053 Simplifying x + 0.875 = 0.80039053 Reorder the terms: 0.875 + x = 0.80039053 Solving 0.875 + x = 0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = 0.80039053 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = 0.80039053 + -0.875 x = 0.80039053 + -0.875 Combine like terms: 0.80039053 + -0.875 = -0.07460947 x = -0.07460947 Simplifying x = -0.07460947Subproblem 2
x + 0.875 = -0.80039053 Simplifying x + 0.875 = -0.80039053 Reorder the terms: 0.875 + x = -0.80039053 Solving 0.875 + x = -0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = -0.80039053 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = -0.80039053 + -0.875 x = -0.80039053 + -0.875 Combine like terms: -0.80039053 + -0.875 = -1.67539053 x = -1.67539053 Simplifying x = -1.67539053Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.07460947, -1.67539053}
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