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Simplifying 0 = -16x2 + 80x + 3 Reorder the terms: 0 = 3 + 80x + -16x2 Solving 0 = 3 + 80x + -16x2 Solving for variable 'x'. Combine like terms: 0 + -3 = -3 -3 + -80x + 16x2 = 3 + 80x + -16x2 + -3 + -80x + 16x2 Reorder the terms: -3 + -80x + 16x2 = 3 + -3 + 80x + -80x + -16x2 + 16x2 Combine like terms: 3 + -3 = 0 -3 + -80x + 16x2 = 0 + 80x + -80x + -16x2 + 16x2 -3 + -80x + 16x2 = 80x + -80x + -16x2 + 16x2 Combine like terms: 80x + -80x = 0 -3 + -80x + 16x2 = 0 + -16x2 + 16x2 -3 + -80x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 -3 + -80x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -0.1875 + -5x + x2 = 0 Move the constant term to the right: Add '0.1875' to each side of the equation. -0.1875 + -5x + 0.1875 + x2 = 0 + 0.1875 Reorder the terms: -0.1875 + 0.1875 + -5x + x2 = 0 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + -5x + x2 = 0 + 0.1875 -5x + x2 = 0 + 0.1875 Combine like terms: 0 + 0.1875 = 0.1875 -5x + x2 = 0.1875 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = 0.1875 + 6.25 Reorder the terms: 6.25 + -5x + x2 = 0.1875 + 6.25 Combine like terms: 0.1875 + 6.25 = 6.4375 6.25 + -5x + x2 = 6.4375 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = 6.4375 Calculate the square root of the right side: 2.537222891 Break this problem into two subproblems by setting (x + -2.5) equal to 2.537222891 and -2.537222891.Subproblem 1
x + -2.5 = 2.537222891 Simplifying x + -2.5 = 2.537222891 Reorder the terms: -2.5 + x = 2.537222891 Solving -2.5 + x = 2.537222891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.537222891 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.537222891 + 2.5 x = 2.537222891 + 2.5 Combine like terms: 2.537222891 + 2.5 = 5.037222891 x = 5.037222891 Simplifying x = 5.037222891Subproblem 2
x + -2.5 = -2.537222891 Simplifying x + -2.5 = -2.537222891 Reorder the terms: -2.5 + x = -2.537222891 Solving -2.5 + x = -2.537222891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.537222891 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.537222891 + 2.5 x = -2.537222891 + 2.5 Combine like terms: -2.537222891 + 2.5 = -0.037222891 x = -0.037222891 Simplifying x = -0.037222891Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.037222891, -0.037222891}
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