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Simplifying 2x2 + -17x + -18 = 0 Reorder the terms: -18 + -17x + 2x2 = 0 Solving -18 + -17x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -9 + -8.5x + x2 = 0 Move the constant term to the right: Add '9' to each side of the equation. -9 + -8.5x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + -8.5x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -8.5x + x2 = 0 + 9 -8.5x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 -8.5x + x2 = 9 The x term is -8.5x. Take half its coefficient (-4.25). Square it (18.0625) and add it to both sides. Add '18.0625' to each side of the equation. -8.5x + 18.0625 + x2 = 9 + 18.0625 Reorder the terms: 18.0625 + -8.5x + x2 = 9 + 18.0625 Combine like terms: 9 + 18.0625 = 27.0625 18.0625 + -8.5x + x2 = 27.0625 Factor a perfect square on the left side: (x + -4.25)(x + -4.25) = 27.0625 Calculate the square root of the right side: 5.202163012 Break this problem into two subproblems by setting (x + -4.25) equal to 5.202163012 and -5.202163012.Subproblem 1
x + -4.25 = 5.202163012 Simplifying x + -4.25 = 5.202163012 Reorder the terms: -4.25 + x = 5.202163012 Solving -4.25 + x = 5.202163012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = 5.202163012 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = 5.202163012 + 4.25 x = 5.202163012 + 4.25 Combine like terms: 5.202163012 + 4.25 = 9.452163012 x = 9.452163012 Simplifying x = 9.452163012Subproblem 2
x + -4.25 = -5.202163012 Simplifying x + -4.25 = -5.202163012 Reorder the terms: -4.25 + x = -5.202163012 Solving -4.25 + x = -5.202163012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = -5.202163012 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = -5.202163012 + 4.25 x = -5.202163012 + 4.25 Combine like terms: -5.202163012 + 4.25 = -0.952163012 x = -0.952163012 Simplifying x = -0.952163012Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.452163012, -0.952163012}
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