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Simplifying x2 + 3x + -4 = 4000 Reorder the terms: -4 + 3x + x2 = 4000 Solving -4 + 3x + x2 = 4000 Solving for variable 'x'. Reorder the terms: -4 + -4000 + 3x + x2 = 4000 + -4000 Combine like terms: -4 + -4000 = -4004 -4004 + 3x + x2 = 4000 + -4000 Combine like terms: 4000 + -4000 = 0 -4004 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '4004' to each side of the equation. -4004 + 3x + 4004 + x2 = 0 + 4004 Reorder the terms: -4004 + 4004 + 3x + x2 = 0 + 4004 Combine like terms: -4004 + 4004 = 0 0 + 3x + x2 = 0 + 4004 3x + x2 = 0 + 4004 Combine like terms: 0 + 4004 = 4004 3x + x2 = 4004 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 4004 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 4004 + 2.25 Combine like terms: 4004 + 2.25 = 4006.25 2.25 + 3x + x2 = 4006.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 4006.25 Calculate the square root of the right side: 63.294944506 Break this problem into two subproblems by setting (x + 1.5) equal to 63.294944506 and -63.294944506.Subproblem 1
x + 1.5 = 63.294944506 Simplifying x + 1.5 = 63.294944506 Reorder the terms: 1.5 + x = 63.294944506 Solving 1.5 + x = 63.294944506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 63.294944506 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 63.294944506 + -1.5 x = 63.294944506 + -1.5 Combine like terms: 63.294944506 + -1.5 = 61.794944506 x = 61.794944506 Simplifying x = 61.794944506Subproblem 2
x + 1.5 = -63.294944506 Simplifying x + 1.5 = -63.294944506 Reorder the terms: 1.5 + x = -63.294944506 Solving 1.5 + x = -63.294944506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -63.294944506 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -63.294944506 + -1.5 x = -63.294944506 + -1.5 Combine like terms: -63.294944506 + -1.5 = -64.794944506 x = -64.794944506 Simplifying x = -64.794944506Solution
The solution to the problem is based on the solutions from the subproblems. x = {61.794944506, -64.794944506}
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