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Simplifying 2x2 + -17x + -7.9 = 0 Reorder the terms: -7.9 + -17x + 2x2 = 0 Solving -7.9 + -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'. -3.95 + -8.5x + x2 = 0 Move the constant term to the right: Add '3.95' to each side of the equation. -3.95 + -8.5x + 3.95 + x2 = 0 + 3.95 Reorder the terms: -3.95 + 3.95 + -8.5x + x2 = 0 + 3.95 Combine like terms: -3.95 + 3.95 = 0.00 0.00 + -8.5x + x2 = 0 + 3.95 -8.5x + x2 = 0 + 3.95 Combine like terms: 0 + 3.95 = 3.95 -8.5x + x2 = 3.95 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 = 3.95 + 18.0625 Reorder the terms: 18.0625 + -8.5x + x2 = 3.95 + 18.0625 Combine like terms: 3.95 + 18.0625 = 22.0125 18.0625 + -8.5x + x2 = 22.0125 Factor a perfect square on the left side: (x + -4.25)(x + -4.25) = 22.0125 Calculate the square root of the right side: 4.691748075 Break this problem into two subproblems by setting (x + -4.25) equal to 4.691748075 and -4.691748075.Subproblem 1
x + -4.25 = 4.691748075 Simplifying x + -4.25 = 4.691748075 Reorder the terms: -4.25 + x = 4.691748075 Solving -4.25 + x = 4.691748075 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 = 4.691748075 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = 4.691748075 + 4.25 x = 4.691748075 + 4.25 Combine like terms: 4.691748075 + 4.25 = 8.941748075 x = 8.941748075 Simplifying x = 8.941748075Subproblem 2
x + -4.25 = -4.691748075 Simplifying x + -4.25 = -4.691748075 Reorder the terms: -4.25 + x = -4.691748075 Solving -4.25 + x = -4.691748075 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 = -4.691748075 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = -4.691748075 + 4.25 x = -4.691748075 + 4.25 Combine like terms: -4.691748075 + 4.25 = -0.441748075 x = -0.441748075 Simplifying x = -0.441748075Solution
The solution to the problem is based on the solutions from the subproblems. x = {8.941748075, -0.441748075}
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