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Simplifying x2 + -1.25x + 0.375 = 0 Reorder the terms: 0.375 + -1.25x + x2 = 0 Solving 0.375 + -1.25x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-0.375' to each side of the equation. 0.375 + -1.25x + -0.375 + x2 = 0 + -0.375 Reorder the terms: 0.375 + -0.375 + -1.25x + x2 = 0 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + -1.25x + x2 = 0 + -0.375 -1.25x + x2 = 0 + -0.375 Combine like terms: 0 + -0.375 = -0.375 -1.25x + x2 = -0.375 The x term is -1.25x. Take half its coefficient (-0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. -1.25x + 0.390625 + x2 = -0.375 + 0.390625 Reorder the terms: 0.390625 + -1.25x + x2 = -0.375 + 0.390625 Combine like terms: -0.375 + 0.390625 = 0.015625 0.390625 + -1.25x + x2 = 0.015625 Factor a perfect square on the left side: (x + -0.625)(x + -0.625) = 0.015625 Calculate the square root of the right side: 0.125 Break this problem into two subproblems by setting (x + -0.625) equal to 0.125 and -0.125.Subproblem 1
x + -0.625 = 0.125 Simplifying x + -0.625 = 0.125 Reorder the terms: -0.625 + x = 0.125 Solving -0.625 + x = 0.125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = 0.125 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 0.125 + 0.625 x = 0.125 + 0.625 Combine like terms: 0.125 + 0.625 = 0.75 x = 0.75 Simplifying x = 0.75Subproblem 2
x + -0.625 = -0.125 Simplifying x + -0.625 = -0.125 Reorder the terms: -0.625 + x = -0.125 Solving -0.625 + x = -0.125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = -0.125 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -0.125 + 0.625 x = -0.125 + 0.625 Combine like terms: -0.125 + 0.625 = 0.5 x = 0.5 Simplifying x = 0.5Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.75, 0.5}
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