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Simplifying 2x2 + -12x + -56 = 0 Reorder the terms: -56 + -12x + 2x2 = 0 Solving -56 + -12x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-28 + -6x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-28 + -6x + x2)' equal to zero and attempt to solve: Simplifying -28 + -6x + x2 = 0 Solving -28 + -6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '28' to each side of the equation. -28 + -6x + 28 + x2 = 0 + 28 Reorder the terms: -28 + 28 + -6x + x2 = 0 + 28 Combine like terms: -28 + 28 = 0 0 + -6x + x2 = 0 + 28 -6x + x2 = 0 + 28 Combine like terms: 0 + 28 = 28 -6x + x2 = 28 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 = 28 + 9 Reorder the terms: 9 + -6x + x2 = 28 + 9 Combine like terms: 28 + 9 = 37 9 + -6x + x2 = 37 Factor a perfect square on the left side: (x + -3)(x + -3) = 37 Calculate the square root of the right side: 6.08276253 Break this problem into two subproblems by setting (x + -3) equal to 6.08276253 and -6.08276253.Subproblem 1
x + -3 = 6.08276253 Simplifying x + -3 = 6.08276253 Reorder the terms: -3 + x = 6.08276253 Solving -3 + x = 6.08276253 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 = 6.08276253 + 3 Combine like terms: -3 + 3 = 0 0 + x = 6.08276253 + 3 x = 6.08276253 + 3 Combine like terms: 6.08276253 + 3 = 9.08276253 x = 9.08276253 Simplifying x = 9.08276253Subproblem 2
x + -3 = -6.08276253 Simplifying x + -3 = -6.08276253 Reorder the terms: -3 + x = -6.08276253 Solving -3 + x = -6.08276253 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 = -6.08276253 + 3 Combine like terms: -3 + 3 = 0 0 + x = -6.08276253 + 3 x = -6.08276253 + 3 Combine like terms: -6.08276253 + 3 = -3.08276253 x = -3.08276253 Simplifying x = -3.08276253Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.08276253, -3.08276253}Solution
x = {9.08276253, -3.08276253}
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