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Simplifying x2 + -2x + -68 = 0 Reorder the terms: -68 + -2x + x2 = 0 Solving -68 + -2x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '68' to each side of the equation. -68 + -2x + 68 + x2 = 0 + 68 Reorder the terms: -68 + 68 + -2x + x2 = 0 + 68 Combine like terms: -68 + 68 = 0 0 + -2x + x2 = 0 + 68 -2x + x2 = 0 + 68 Combine like terms: 0 + 68 = 68 -2x + x2 = 68 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 68 + 1 Reorder the terms: 1 + -2x + x2 = 68 + 1 Combine like terms: 68 + 1 = 69 1 + -2x + x2 = 69 Factor a perfect square on the left side: (x + -1)(x + -1) = 69 Calculate the square root of the right side: 8.306623863 Break this problem into two subproblems by setting (x + -1) equal to 8.306623863 and -8.306623863.Subproblem 1
x + -1 = 8.306623863 Simplifying x + -1 = 8.306623863 Reorder the terms: -1 + x = 8.306623863 Solving -1 + x = 8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 8.306623863 + 1 Combine like terms: -1 + 1 = 0 0 + x = 8.306623863 + 1 x = 8.306623863 + 1 Combine like terms: 8.306623863 + 1 = 9.306623863 x = 9.306623863 Simplifying x = 9.306623863Subproblem 2
x + -1 = -8.306623863 Simplifying x + -1 = -8.306623863 Reorder the terms: -1 + x = -8.306623863 Solving -1 + x = -8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -8.306623863 + 1 Combine like terms: -1 + 1 = 0 0 + x = -8.306623863 + 1 x = -8.306623863 + 1 Combine like terms: -8.306623863 + 1 = -7.306623863 x = -7.306623863 Simplifying x = -7.306623863Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.306623863, -7.306623863}
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