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Simplifying 2x2 + -20x + 16 = 8x Reorder the terms: 16 + -20x + 2x2 = 8x Solving 16 + -20x + 2x2 = 8x Solving for variable 'x'. Reorder the terms: 16 + -20x + -8x + 2x2 = 8x + -8x Combine like terms: -20x + -8x = -28x 16 + -28x + 2x2 = 8x + -8x Combine like terms: 8x + -8x = 0 16 + -28x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(8 + -14x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(8 + -14x + x2)' equal to zero and attempt to solve: Simplifying 8 + -14x + x2 = 0 Solving 8 + -14x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-8' to each side of the equation. 8 + -14x + -8 + x2 = 0 + -8 Reorder the terms: 8 + -8 + -14x + x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -14x + x2 = 0 + -8 -14x + x2 = 0 + -8 Combine like terms: 0 + -8 = -8 -14x + x2 = -8 The x term is -14x. Take half its coefficient (-7). Square it (49) and add it to both sides. Add '49' to each side of the equation. -14x + 49 + x2 = -8 + 49 Reorder the terms: 49 + -14x + x2 = -8 + 49 Combine like terms: -8 + 49 = 41 49 + -14x + x2 = 41 Factor a perfect square on the left side: (x + -7)(x + -7) = 41 Calculate the square root of the right side: 6.403124237 Break this problem into two subproblems by setting (x + -7) equal to 6.403124237 and -6.403124237.Subproblem 1
x + -7 = 6.403124237 Simplifying x + -7 = 6.403124237 Reorder the terms: -7 + x = 6.403124237 Solving -7 + x = 6.403124237 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 6.403124237 + 7 Combine like terms: -7 + 7 = 0 0 + x = 6.403124237 + 7 x = 6.403124237 + 7 Combine like terms: 6.403124237 + 7 = 13.403124237 x = 13.403124237 Simplifying x = 13.403124237Subproblem 2
x + -7 = -6.403124237 Simplifying x + -7 = -6.403124237 Reorder the terms: -7 + x = -6.403124237 Solving -7 + x = -6.403124237 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -6.403124237 + 7 Combine like terms: -7 + 7 = 0 0 + x = -6.403124237 + 7 x = -6.403124237 + 7 Combine like terms: -6.403124237 + 7 = 0.596875763 x = 0.596875763 Simplifying x = 0.596875763Solution
The solution to the problem is based on the solutions from the subproblems. x = {13.403124237, 0.596875763}Solution
x = {13.403124237, 0.596875763}
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