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Simplifying x2 + 6x + -172 = 0 Reorder the terms: -172 + 6x + x2 = 0 Solving -172 + 6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '172' to each side of the equation. -172 + 6x + 172 + x2 = 0 + 172 Reorder the terms: -172 + 172 + 6x + x2 = 0 + 172 Combine like terms: -172 + 172 = 0 0 + 6x + x2 = 0 + 172 6x + x2 = 0 + 172 Combine like terms: 0 + 172 = 172 6x + x2 = 172 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 = 172 + 9 Reorder the terms: 9 + 6x + x2 = 172 + 9 Combine like terms: 172 + 9 = 181 9 + 6x + x2 = 181 Factor a perfect square on the left side: (x + 3)(x + 3) = 181 Calculate the square root of the right side: 13.453624047 Break this problem into two subproblems by setting (x + 3) equal to 13.453624047 and -13.453624047.Subproblem 1
x + 3 = 13.453624047 Simplifying x + 3 = 13.453624047 Reorder the terms: 3 + x = 13.453624047 Solving 3 + x = 13.453624047 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 = 13.453624047 + -3 Combine like terms: 3 + -3 = 0 0 + x = 13.453624047 + -3 x = 13.453624047 + -3 Combine like terms: 13.453624047 + -3 = 10.453624047 x = 10.453624047 Simplifying x = 10.453624047Subproblem 2
x + 3 = -13.453624047 Simplifying x + 3 = -13.453624047 Reorder the terms: 3 + x = -13.453624047 Solving 3 + x = -13.453624047 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 = -13.453624047 + -3 Combine like terms: 3 + -3 = 0 0 + x = -13.453624047 + -3 x = -13.453624047 + -3 Combine like terms: -13.453624047 + -3 = -16.453624047 x = -16.453624047 Simplifying x = -16.453624047Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.453624047, -16.453624047}
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