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Simplifying x2 + -15x + -32 = 0 Reorder the terms: -32 + -15x + x2 = 0 Solving -32 + -15x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '32' to each side of the equation. -32 + -15x + 32 + x2 = 0 + 32 Reorder the terms: -32 + 32 + -15x + x2 = 0 + 32 Combine like terms: -32 + 32 = 0 0 + -15x + x2 = 0 + 32 -15x + x2 = 0 + 32 Combine like terms: 0 + 32 = 32 -15x + x2 = 32 The x term is -15x. Take half its coefficient (-7.5). Square it (56.25) and add it to both sides. Add '56.25' to each side of the equation. -15x + 56.25 + x2 = 32 + 56.25 Reorder the terms: 56.25 + -15x + x2 = 32 + 56.25 Combine like terms: 32 + 56.25 = 88.25 56.25 + -15x + x2 = 88.25 Factor a perfect square on the left side: (x + -7.5)(x + -7.5) = 88.25 Calculate the square root of the right side: 9.394147114 Break this problem into two subproblems by setting (x + -7.5) equal to 9.394147114 and -9.394147114.Subproblem 1
x + -7.5 = 9.394147114 Simplifying x + -7.5 = 9.394147114 Reorder the terms: -7.5 + x = 9.394147114 Solving -7.5 + x = 9.394147114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 9.394147114 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 9.394147114 + 7.5 x = 9.394147114 + 7.5 Combine like terms: 9.394147114 + 7.5 = 16.894147114 x = 16.894147114 Simplifying x = 16.894147114Subproblem 2
x + -7.5 = -9.394147114 Simplifying x + -7.5 = -9.394147114 Reorder the terms: -7.5 + x = -9.394147114 Solving -7.5 + x = -9.394147114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -9.394147114 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -9.394147114 + 7.5 x = -9.394147114 + 7.5 Combine like terms: -9.394147114 + 7.5 = -1.894147114 x = -1.894147114 Simplifying x = -1.894147114Solution
The solution to the problem is based on the solutions from the subproblems. x = {16.894147114, -1.894147114}
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