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Simplifying 0 = -16x2 + 37x + -20 Reorder the terms: 0 = -20 + 37x + -16x2 Solving 0 = -20 + 37x + -16x2 Solving for variable 'x'. Combine like terms: 0 + 20 = 20 20 + -37x + 16x2 = -20 + 37x + -16x2 + 20 + -37x + 16x2 Reorder the terms: 20 + -37x + 16x2 = -20 + 20 + 37x + -37x + -16x2 + 16x2 Combine like terms: -20 + 20 = 0 20 + -37x + 16x2 = 0 + 37x + -37x + -16x2 + 16x2 20 + -37x + 16x2 = 37x + -37x + -16x2 + 16x2 Combine like terms: 37x + -37x = 0 20 + -37x + 16x2 = 0 + -16x2 + 16x2 20 + -37x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 20 + -37x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. 1.25 + -2.3125x + x2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + -2.3125x + -1.25 + x2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + -2.3125x + x2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + -2.3125x + x2 = 0 + -1.25 -2.3125x + x2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 -2.3125x + x2 = -1.25 The x term is -2.3125x. Take half its coefficient (-1.15625). Square it (1.336914063) and add it to both sides. Add '1.336914063' to each side of the equation. -2.3125x + 1.336914063 + x2 = -1.25 + 1.336914063 Reorder the terms: 1.336914063 + -2.3125x + x2 = -1.25 + 1.336914063 Combine like terms: -1.25 + 1.336914063 = 0.086914063 1.336914063 + -2.3125x + x2 = 0.086914063 Factor a perfect square on the left side: (x + -1.15625)(x + -1.15625) = 0.086914063 Calculate the square root of the right side: 0.294811911 Break this problem into two subproblems by setting (x + -1.15625) equal to 0.294811911 and -0.294811911.Subproblem 1
x + -1.15625 = 0.294811911 Simplifying x + -1.15625 = 0.294811911 Reorder the terms: -1.15625 + x = 0.294811911 Solving -1.15625 + x = 0.294811911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.15625' to each side of the equation. -1.15625 + 1.15625 + x = 0.294811911 + 1.15625 Combine like terms: -1.15625 + 1.15625 = 0.00000 0.00000 + x = 0.294811911 + 1.15625 x = 0.294811911 + 1.15625 Combine like terms: 0.294811911 + 1.15625 = 1.451061911 x = 1.451061911 Simplifying x = 1.451061911Subproblem 2
x + -1.15625 = -0.294811911 Simplifying x + -1.15625 = -0.294811911 Reorder the terms: -1.15625 + x = -0.294811911 Solving -1.15625 + x = -0.294811911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.15625' to each side of the equation. -1.15625 + 1.15625 + x = -0.294811911 + 1.15625 Combine like terms: -1.15625 + 1.15625 = 0.00000 0.00000 + x = -0.294811911 + 1.15625 x = -0.294811911 + 1.15625 Combine like terms: -0.294811911 + 1.15625 = 0.861438089 x = 0.861438089 Simplifying x = 0.861438089Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.451061911, 0.861438089}
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