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Simplifying 4x2 + -12x + -680 = 0 Reorder the terms: -680 + -12x + 4x2 = 0 Solving -680 + -12x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(-170 + -3x + x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-170 + -3x + x2)' equal to zero and attempt to solve: Simplifying -170 + -3x + x2 = 0 Solving -170 + -3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '170' to each side of the equation. -170 + -3x + 170 + x2 = 0 + 170 Reorder the terms: -170 + 170 + -3x + x2 = 0 + 170 Combine like terms: -170 + 170 = 0 0 + -3x + x2 = 0 + 170 -3x + x2 = 0 + 170 Combine like terms: 0 + 170 = 170 -3x + x2 = 170 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 170 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 170 + 2.25 Combine like terms: 170 + 2.25 = 172.25 2.25 + -3x + x2 = 172.25 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 172.25 Calculate the square root of the right side: 13.124404748 Break this problem into two subproblems by setting (x + -1.5) equal to 13.124404748 and -13.124404748.Subproblem 1
x + -1.5 = 13.124404748 Simplifying x + -1.5 = 13.124404748 Reorder the terms: -1.5 + x = 13.124404748 Solving -1.5 + x = 13.124404748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 13.124404748 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 13.124404748 + 1.5 x = 13.124404748 + 1.5 Combine like terms: 13.124404748 + 1.5 = 14.624404748 x = 14.624404748 Simplifying x = 14.624404748Subproblem 2
x + -1.5 = -13.124404748 Simplifying x + -1.5 = -13.124404748 Reorder the terms: -1.5 + x = -13.124404748 Solving -1.5 + x = -13.124404748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -13.124404748 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -13.124404748 + 1.5 x = -13.124404748 + 1.5 Combine like terms: -13.124404748 + 1.5 = -11.624404748 x = -11.624404748 Simplifying x = -11.624404748Solution
The solution to the problem is based on the solutions from the subproblems. x = {14.624404748, -11.624404748}Solution
x = {14.624404748, -11.624404748}
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