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Simplifying x2 + 12x + 23 = 0 Reorder the terms: 23 + 12x + x2 = 0 Solving 23 + 12x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-23' to each side of the equation. 23 + 12x + -23 + x2 = 0 + -23 Reorder the terms: 23 + -23 + 12x + x2 = 0 + -23 Combine like terms: 23 + -23 = 0 0 + 12x + x2 = 0 + -23 12x + x2 = 0 + -23 Combine like terms: 0 + -23 = -23 12x + x2 = -23 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = -23 + 36 Reorder the terms: 36 + 12x + x2 = -23 + 36 Combine like terms: -23 + 36 = 13 36 + 12x + x2 = 13 Factor a perfect square on the left side: (x + 6)(x + 6) = 13 Calculate the square root of the right side: 3.605551275 Break this problem into two subproblems by setting (x + 6) equal to 3.605551275 and -3.605551275.Subproblem 1
x + 6 = 3.605551275 Simplifying x + 6 = 3.605551275 Reorder the terms: 6 + x = 3.605551275 Solving 6 + x = 3.605551275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 3.605551275 + -6 Combine like terms: 6 + -6 = 0 0 + x = 3.605551275 + -6 x = 3.605551275 + -6 Combine like terms: 3.605551275 + -6 = -2.394448725 x = -2.394448725 Simplifying x = -2.394448725Subproblem 2
x + 6 = -3.605551275 Simplifying x + 6 = -3.605551275 Reorder the terms: 6 + x = -3.605551275 Solving 6 + x = -3.605551275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -3.605551275 + -6 Combine like terms: 6 + -6 = 0 0 + x = -3.605551275 + -6 x = -3.605551275 + -6 Combine like terms: -3.605551275 + -6 = -9.605551275 x = -9.605551275 Simplifying x = -9.605551275Solution
The solution to the problem is based on the solutions from the subproblems. x = {-2.394448725, -9.605551275}
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