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Simplifying r2 + 6r + 3 = 0 Reorder the terms: 3 + 6r + r2 = 0 Solving 3 + 6r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 6r + -3 + r2 = 0 + -3 Reorder the terms: 3 + -3 + 6r + r2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 6r + r2 = 0 + -3 6r + r2 = 0 + -3 Combine like terms: 0 + -3 = -3 6r + r2 = -3 The r term is 6r. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6r + 9 + r2 = -3 + 9 Reorder the terms: 9 + 6r + r2 = -3 + 9 Combine like terms: -3 + 9 = 6 9 + 6r + r2 = 6 Factor a perfect square on the left side: (r + 3)(r + 3) = 6 Calculate the square root of the right side: 2.449489743 Break this problem into two subproblems by setting (r + 3) equal to 2.449489743 and -2.449489743.Subproblem 1
r + 3 = 2.449489743 Simplifying r + 3 = 2.449489743 Reorder the terms: 3 + r = 2.449489743 Solving 3 + r = 2.449489743 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = 2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + r = 2.449489743 + -3 r = 2.449489743 + -3 Combine like terms: 2.449489743 + -3 = -0.550510257 r = -0.550510257 Simplifying r = -0.550510257Subproblem 2
r + 3 = -2.449489743 Simplifying r + 3 = -2.449489743 Reorder the terms: 3 + r = -2.449489743 Solving 3 + r = -2.449489743 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = -2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + r = -2.449489743 + -3 r = -2.449489743 + -3 Combine like terms: -2.449489743 + -3 = -5.449489743 r = -5.449489743 Simplifying r = -5.449489743Solution
The solution to the problem is based on the solutions from the subproblems. r = {-0.550510257, -5.449489743}
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