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Simplifying x2 + -15x + -33 = 0 Reorder the terms: -33 + -15x + x2 = 0 Solving -33 + -15x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '33' to each side of the equation. -33 + -15x + 33 + x2 = 0 + 33 Reorder the terms: -33 + 33 + -15x + x2 = 0 + 33 Combine like terms: -33 + 33 = 0 0 + -15x + x2 = 0 + 33 -15x + x2 = 0 + 33 Combine like terms: 0 + 33 = 33 -15x + x2 = 33 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 = 33 + 56.25 Reorder the terms: 56.25 + -15x + x2 = 33 + 56.25 Combine like terms: 33 + 56.25 = 89.25 56.25 + -15x + x2 = 89.25 Factor a perfect square on the left side: (x + -7.5)(x + -7.5) = 89.25 Calculate the square root of the right side: 9.447221814 Break this problem into two subproblems by setting (x + -7.5) equal to 9.447221814 and -9.447221814.Subproblem 1
x + -7.5 = 9.447221814 Simplifying x + -7.5 = 9.447221814 Reorder the terms: -7.5 + x = 9.447221814 Solving -7.5 + x = 9.447221814 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 = 9.447221814 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 9.447221814 + 7.5 x = 9.447221814 + 7.5 Combine like terms: 9.447221814 + 7.5 = 16.947221814 x = 16.947221814 Simplifying x = 16.947221814Subproblem 2
x + -7.5 = -9.447221814 Simplifying x + -7.5 = -9.447221814 Reorder the terms: -7.5 + x = -9.447221814 Solving -7.5 + x = -9.447221814 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 = -9.447221814 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -9.447221814 + 7.5 x = -9.447221814 + 7.5 Combine like terms: -9.447221814 + 7.5 = -1.947221814 x = -1.947221814 Simplifying x = -1.947221814Solution
The solution to the problem is based on the solutions from the subproblems. x = {16.947221814, -1.947221814}
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