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Simplifying x2 + -6x + -86 = 0 Reorder the terms: -86 + -6x + x2 = 0 Solving -86 + -6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '86' to each side of the equation. -86 + -6x + 86 + x2 = 0 + 86 Reorder the terms: -86 + 86 + -6x + x2 = 0 + 86 Combine like terms: -86 + 86 = 0 0 + -6x + x2 = 0 + 86 -6x + x2 = 0 + 86 Combine like terms: 0 + 86 = 86 -6x + x2 = 86 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = 86 + 9 Reorder the terms: 9 + -6x + x2 = 86 + 9 Combine like terms: 86 + 9 = 95 9 + -6x + x2 = 95 Factor a perfect square on the left side: (x + -3)(x + -3) = 95 Calculate the square root of the right side: 9.746794345 Break this problem into two subproblems by setting (x + -3) equal to 9.746794345 and -9.746794345.Subproblem 1
x + -3 = 9.746794345 Simplifying x + -3 = 9.746794345 Reorder the terms: -3 + x = 9.746794345 Solving -3 + x = 9.746794345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 9.746794345 + 3 Combine like terms: -3 + 3 = 0 0 + x = 9.746794345 + 3 x = 9.746794345 + 3 Combine like terms: 9.746794345 + 3 = 12.746794345 x = 12.746794345 Simplifying x = 12.746794345Subproblem 2
x + -3 = -9.746794345 Simplifying x + -3 = -9.746794345 Reorder the terms: -3 + x = -9.746794345 Solving -3 + x = -9.746794345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -9.746794345 + 3 Combine like terms: -3 + 3 = 0 0 + x = -9.746794345 + 3 x = -9.746794345 + 3 Combine like terms: -9.746794345 + 3 = -6.746794345 x = -6.746794345 Simplifying x = -6.746794345Solution
The solution to the problem is based on the solutions from the subproblems. x = {12.746794345, -6.746794345}
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