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Simplifying r2 + 3r + -14 = 0 Reorder the terms: -14 + 3r + r2 = 0 Solving -14 + 3r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '14' to each side of the equation. -14 + 3r + 14 + r2 = 0 + 14 Reorder the terms: -14 + 14 + 3r + r2 = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 3r + r2 = 0 + 14 3r + r2 = 0 + 14 Combine like terms: 0 + 14 = 14 3r + r2 = 14 The r term is 3r. 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. 3r + 2.25 + r2 = 14 + 2.25 Reorder the terms: 2.25 + 3r + r2 = 14 + 2.25 Combine like terms: 14 + 2.25 = 16.25 2.25 + 3r + r2 = 16.25 Factor a perfect square on the left side: (r + 1.5)(r + 1.5) = 16.25 Calculate the square root of the right side: 4.031128874 Break this problem into two subproblems by setting (r + 1.5) equal to 4.031128874 and -4.031128874.Subproblem 1
r + 1.5 = 4.031128874 Simplifying r + 1.5 = 4.031128874 Reorder the terms: 1.5 + r = 4.031128874 Solving 1.5 + r = 4.031128874 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + r = 4.031128874 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + r = 4.031128874 + -1.5 r = 4.031128874 + -1.5 Combine like terms: 4.031128874 + -1.5 = 2.531128874 r = 2.531128874 Simplifying r = 2.531128874Subproblem 2
r + 1.5 = -4.031128874 Simplifying r + 1.5 = -4.031128874 Reorder the terms: 1.5 + r = -4.031128874 Solving 1.5 + r = -4.031128874 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + r = -4.031128874 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + r = -4.031128874 + -1.5 r = -4.031128874 + -1.5 Combine like terms: -4.031128874 + -1.5 = -5.531128874 r = -5.531128874 Simplifying r = -5.531128874Solution
The solution to the problem is based on the solutions from the subproblems. r = {2.531128874, -5.531128874}
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