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Simplifying 6x2 + -18x = 86 Reorder the terms: -18x + 6x2 = 86 Solving -18x + 6x2 = 86 Solving for variable 'x'. Reorder the terms: -86 + -18x + 6x2 = 86 + -86 Combine like terms: 86 + -86 = 0 -86 + -18x + 6x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-43 + -9x + 3x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-43 + -9x + 3x2)' equal to zero and attempt to solve: Simplifying -43 + -9x + 3x2 = 0 Solving -43 + -9x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -14.33333333 + -3x + x2 = 0 Move the constant term to the right: Add '14.33333333' to each side of the equation. -14.33333333 + -3x + 14.33333333 + x2 = 0 + 14.33333333 Reorder the terms: -14.33333333 + 14.33333333 + -3x + x2 = 0 + 14.33333333 Combine like terms: -14.33333333 + 14.33333333 = 0.00000000 0.00000000 + -3x + x2 = 0 + 14.33333333 -3x + x2 = 0 + 14.33333333 Combine like terms: 0 + 14.33333333 = 14.33333333 -3x + x2 = 14.33333333 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 14.33333333 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 14.33333333 + 2.25 Combine like terms: 14.33333333 + 2.25 = 16.58333333 2.25 + -3x + x2 = 16.58333333 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 16.58333333 Calculate the square root of the right side: 4.072263907 Break this problem into two subproblems by setting (x + -1.5) equal to 4.072263907 and -4.072263907.Subproblem 1
x + -1.5 = 4.072263907 Simplifying x + -1.5 = 4.072263907 Reorder the terms: -1.5 + x = 4.072263907 Solving -1.5 + x = 4.072263907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 4.072263907 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 4.072263907 + 1.5 x = 4.072263907 + 1.5 Combine like terms: 4.072263907 + 1.5 = 5.572263907 x = 5.572263907 Simplifying x = 5.572263907Subproblem 2
x + -1.5 = -4.072263907 Simplifying x + -1.5 = -4.072263907 Reorder the terms: -1.5 + x = -4.072263907 Solving -1.5 + x = -4.072263907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -4.072263907 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -4.072263907 + 1.5 x = -4.072263907 + 1.5 Combine like terms: -4.072263907 + 1.5 = -2.572263907 x = -2.572263907 Simplifying x = -2.572263907Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.572263907, -2.572263907}Solution
x = {5.572263907, -2.572263907}
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