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Simplifying 0 = -8x2 + -12x + 3 Reorder the terms: 0 = 3 + -12x + -8x2 Solving 0 = 3 + -12x + -8x2 Solving for variable 'x'. Combine like terms: 0 + -3 = -3 -3 + 12x + 8x2 = 3 + -12x + -8x2 + -3 + 12x + 8x2 Reorder the terms: -3 + 12x + 8x2 = 3 + -3 + -12x + 12x + -8x2 + 8x2 Combine like terms: 3 + -3 = 0 -3 + 12x + 8x2 = 0 + -12x + 12x + -8x2 + 8x2 -3 + 12x + 8x2 = -12x + 12x + -8x2 + 8x2 Combine like terms: -12x + 12x = 0 -3 + 12x + 8x2 = 0 + -8x2 + 8x2 -3 + 12x + 8x2 = -8x2 + 8x2 Combine like terms: -8x2 + 8x2 = 0 -3 + 12x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -0.375 + 1.5x + x2 = 0 Move the constant term to the right: Add '0.375' to each side of the equation. -0.375 + 1.5x + 0.375 + x2 = 0 + 0.375 Reorder the terms: -0.375 + 0.375 + 1.5x + x2 = 0 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + 1.5x + x2 = 0 + 0.375 1.5x + x2 = 0 + 0.375 Combine like terms: 0 + 0.375 = 0.375 1.5x + x2 = 0.375 The x term is 1.5x. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5x + 0.5625 + x2 = 0.375 + 0.5625 Reorder the terms: 0.5625 + 1.5x + x2 = 0.375 + 0.5625 Combine like terms: 0.375 + 0.5625 = 0.9375 0.5625 + 1.5x + x2 = 0.9375 Factor a perfect square on the left side: (x + 0.75)(x + 0.75) = 0.9375 Calculate the square root of the right side: 0.968245837 Break this problem into two subproblems by setting (x + 0.75) equal to 0.968245837 and -0.968245837.Subproblem 1
x + 0.75 = 0.968245837 Simplifying x + 0.75 = 0.968245837 Reorder the terms: 0.75 + x = 0.968245837 Solving 0.75 + x = 0.968245837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 0.968245837 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 0.968245837 + -0.75 x = 0.968245837 + -0.75 Combine like terms: 0.968245837 + -0.75 = 0.218245837 x = 0.218245837 Simplifying x = 0.218245837Subproblem 2
x + 0.75 = -0.968245837 Simplifying x + 0.75 = -0.968245837 Reorder the terms: 0.75 + x = -0.968245837 Solving 0.75 + x = -0.968245837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -0.968245837 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -0.968245837 + -0.75 x = -0.968245837 + -0.75 Combine like terms: -0.968245837 + -0.75 = -1.718245837 x = -1.718245837 Simplifying x = -1.718245837Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.218245837, -1.718245837}
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