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Simplifying 0 = -6x2 + 6x + 5 Reorder the terms: 0 = 5 + 6x + -6x2 Solving 0 = 5 + 6x + -6x2 Solving for variable 'x'. Combine like terms: 0 + -5 = -5 -5 + -6x + 6x2 = 5 + 6x + -6x2 + -5 + -6x + 6x2 Reorder the terms: -5 + -6x + 6x2 = 5 + -5 + 6x + -6x + -6x2 + 6x2 Combine like terms: 5 + -5 = 0 -5 + -6x + 6x2 = 0 + 6x + -6x + -6x2 + 6x2 -5 + -6x + 6x2 = 6x + -6x + -6x2 + 6x2 Combine like terms: 6x + -6x = 0 -5 + -6x + 6x2 = 0 + -6x2 + 6x2 -5 + -6x + 6x2 = -6x2 + 6x2 Combine like terms: -6x2 + 6x2 = 0 -5 + -6x + 6x2 = 0 Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -0.8333333333 + -1x + x2 = 0 Move the constant term to the right: Add '0.8333333333' to each side of the equation. -0.8333333333 + -1x + 0.8333333333 + x2 = 0 + 0.8333333333 Reorder the terms: -0.8333333333 + 0.8333333333 + -1x + x2 = 0 + 0.8333333333 Combine like terms: -0.8333333333 + 0.8333333333 = 0.0000000000 0.0000000000 + -1x + x2 = 0 + 0.8333333333 -1x + x2 = 0 + 0.8333333333 Combine like terms: 0 + 0.8333333333 = 0.8333333333 -1x + x2 = 0.8333333333 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 0.8333333333 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 0.8333333333 + 0.25 Combine like terms: 0.8333333333 + 0.25 = 1.0833333333 0.25 + -1x + x2 = 1.0833333333 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 1.0833333333 Calculate the square root of the right side: 1.040833 Break this problem into two subproblems by setting (x + -0.5) equal to 1.040833 and -1.040833.Subproblem 1
x + -0.5 = 1.040833 Simplifying x + -0.5 = 1.040833 Reorder the terms: -0.5 + x = 1.040833 Solving -0.5 + x = 1.040833 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.040833 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.040833 + 0.5 x = 1.040833 + 0.5 Combine like terms: 1.040833 + 0.5 = 1.540833 x = 1.540833 Simplifying x = 1.540833Subproblem 2
x + -0.5 = -1.040833 Simplifying x + -0.5 = -1.040833 Reorder the terms: -0.5 + x = -1.040833 Solving -0.5 + x = -1.040833 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.040833 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.040833 + 0.5 x = -1.040833 + 0.5 Combine like terms: -1.040833 + 0.5 = -0.540833 x = -0.540833 Simplifying x = -0.540833Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.540833, -0.540833}
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