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Simplifying -16x2 + 50x + 25 = 0 Reorder the terms: 25 + 50x + -16x2 = 0 Solving 25 + 50x + -16x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -16 the coefficient of the squared term: Divide each side by '-16'. -1.5625 + -3.125x + x2 = 0 Move the constant term to the right: Add '1.5625' to each side of the equation. -1.5625 + -3.125x + 1.5625 + x2 = 0 + 1.5625 Reorder the terms: -1.5625 + 1.5625 + -3.125x + x2 = 0 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + -3.125x + x2 = 0 + 1.5625 -3.125x + x2 = 0 + 1.5625 Combine like terms: 0 + 1.5625 = 1.5625 -3.125x + x2 = 1.5625 The x term is -3.125x. Take half its coefficient (-1.5625). Square it (2.44140625) and add it to both sides. Add '2.44140625' to each side of the equation. -3.125x + 2.44140625 + x2 = 1.5625 + 2.44140625 Reorder the terms: 2.44140625 + -3.125x + x2 = 1.5625 + 2.44140625 Combine like terms: 1.5625 + 2.44140625 = 4.00390625 2.44140625 + -3.125x + x2 = 4.00390625 Factor a perfect square on the left side: (x + -1.5625)(x + -1.5625) = 4.00390625 Calculate the square root of the right side: 2.000976324 Break this problem into two subproblems by setting (x + -1.5625) equal to 2.000976324 and -2.000976324.Subproblem 1
x + -1.5625 = 2.000976324 Simplifying x + -1.5625 = 2.000976324 Reorder the terms: -1.5625 + x = 2.000976324 Solving -1.5625 + x = 2.000976324 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + x = 2.000976324 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + x = 2.000976324 + 1.5625 x = 2.000976324 + 1.5625 Combine like terms: 2.000976324 + 1.5625 = 3.563476324 x = 3.563476324 Simplifying x = 3.563476324Subproblem 2
x + -1.5625 = -2.000976324 Simplifying x + -1.5625 = -2.000976324 Reorder the terms: -1.5625 + x = -2.000976324 Solving -1.5625 + x = -2.000976324 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + x = -2.000976324 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + x = -2.000976324 + 1.5625 x = -2.000976324 + 1.5625 Combine like terms: -2.000976324 + 1.5625 = -0.438476324 x = -0.438476324 Simplifying x = -0.438476324Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.563476324, -0.438476324}
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