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Simplifying 4x2 + -8x + -68 = 0 Reorder the terms: -68 + -8x + 4x2 = 0 Solving -68 + -8x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(-17 + -2x + x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-17 + -2x + x2)' equal to zero and attempt to solve: Simplifying -17 + -2x + x2 = 0 Solving -17 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '17' to each side of the equation. -17 + -2x + 17 + x2 = 0 + 17 Reorder the terms: -17 + 17 + -2x + x2 = 0 + 17 Combine like terms: -17 + 17 = 0 0 + -2x + x2 = 0 + 17 -2x + x2 = 0 + 17 Combine like terms: 0 + 17 = 17 -2x + x2 = 17 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 = 17 + 1 Reorder the terms: 1 + -2x + x2 = 17 + 1 Combine like terms: 17 + 1 = 18 1 + -2x + x2 = 18 Factor a perfect square on the left side: (x + -1)(x + -1) = 18 Calculate the square root of the right side: 4.242640687 Break this problem into two subproblems by setting (x + -1) equal to 4.242640687 and -4.242640687.Subproblem 1
x + -1 = 4.242640687 Simplifying x + -1 = 4.242640687 Reorder the terms: -1 + x = 4.242640687 Solving -1 + x = 4.242640687 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 = 4.242640687 + 1 Combine like terms: -1 + 1 = 0 0 + x = 4.242640687 + 1 x = 4.242640687 + 1 Combine like terms: 4.242640687 + 1 = 5.242640687 x = 5.242640687 Simplifying x = 5.242640687Subproblem 2
x + -1 = -4.242640687 Simplifying x + -1 = -4.242640687 Reorder the terms: -1 + x = -4.242640687 Solving -1 + x = -4.242640687 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 = -4.242640687 + 1 Combine like terms: -1 + 1 = 0 0 + x = -4.242640687 + 1 x = -4.242640687 + 1 Combine like terms: -4.242640687 + 1 = -3.242640687 x = -3.242640687 Simplifying x = -3.242640687Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.242640687, -3.242640687}Solution
x = {5.242640687, -3.242640687}
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