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Simplifying 0 = -16x2 + 25x + 3 Reorder the terms: 0 = 3 + 25x + -16x2 Solving 0 = 3 + 25x + -16x2 Solving for variable 'x'. Combine like terms: 0 + -3 = -3 -3 + -25x + 16x2 = 3 + 25x + -16x2 + -3 + -25x + 16x2 Reorder the terms: -3 + -25x + 16x2 = 3 + -3 + 25x + -25x + -16x2 + 16x2 Combine like terms: 3 + -3 = 0 -3 + -25x + 16x2 = 0 + 25x + -25x + -16x2 + 16x2 -3 + -25x + 16x2 = 25x + -25x + -16x2 + 16x2 Combine like terms: 25x + -25x = 0 -3 + -25x + 16x2 = 0 + -16x2 + 16x2 -3 + -25x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 -3 + -25x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -0.1875 + -1.5625x + x2 = 0 Move the constant term to the right: Add '0.1875' to each side of the equation. -0.1875 + -1.5625x + 0.1875 + x2 = 0 + 0.1875 Reorder the terms: -0.1875 + 0.1875 + -1.5625x + x2 = 0 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + -1.5625x + x2 = 0 + 0.1875 -1.5625x + x2 = 0 + 0.1875 Combine like terms: 0 + 0.1875 = 0.1875 -1.5625x + x2 = 0.1875 The x term is -1.5625x. Take half its coefficient (-0.78125). Square it (0.6103515625) and add it to both sides. Add '0.6103515625' to each side of the equation. -1.5625x + 0.6103515625 + x2 = 0.1875 + 0.6103515625 Reorder the terms: 0.6103515625 + -1.5625x + x2 = 0.1875 + 0.6103515625 Combine like terms: 0.1875 + 0.6103515625 = 0.7978515625 0.6103515625 + -1.5625x + x2 = 0.7978515625 Factor a perfect square on the left side: (x + -0.78125)(x + -0.78125) = 0.7978515625 Calculate the square root of the right side: 0.89322537 Break this problem into two subproblems by setting (x + -0.78125) equal to 0.89322537 and -0.89322537.Subproblem 1
x + -0.78125 = 0.89322537 Simplifying x + -0.78125 = 0.89322537 Reorder the terms: -0.78125 + x = 0.89322537 Solving -0.78125 + x = 0.89322537 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.78125' to each side of the equation. -0.78125 + 0.78125 + x = 0.89322537 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + x = 0.89322537 + 0.78125 x = 0.89322537 + 0.78125 Combine like terms: 0.89322537 + 0.78125 = 1.67447537 x = 1.67447537 Simplifying x = 1.67447537Subproblem 2
x + -0.78125 = -0.89322537 Simplifying x + -0.78125 = -0.89322537 Reorder the terms: -0.78125 + x = -0.89322537 Solving -0.78125 + x = -0.89322537 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.78125' to each side of the equation. -0.78125 + 0.78125 + x = -0.89322537 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + x = -0.89322537 + 0.78125 x = -0.89322537 + 0.78125 Combine like terms: -0.89322537 + 0.78125 = -0.11197537 x = -0.11197537 Simplifying x = -0.11197537Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.67447537, -0.11197537}
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