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Simplifying k2 + -4k + -36 = 0 Reorder the terms: -36 + -4k + k2 = 0 Solving -36 + -4k + k2 = 0 Solving for variable 'k'. Begin completing the square. Move the constant term to the right: Add '36' to each side of the equation. -36 + -4k + 36 + k2 = 0 + 36 Reorder the terms: -36 + 36 + -4k + k2 = 0 + 36 Combine like terms: -36 + 36 = 0 0 + -4k + k2 = 0 + 36 -4k + k2 = 0 + 36 Combine like terms: 0 + 36 = 36 -4k + k2 = 36 The k term is -4k. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4k + 4 + k2 = 36 + 4 Reorder the terms: 4 + -4k + k2 = 36 + 4 Combine like terms: 36 + 4 = 40 4 + -4k + k2 = 40 Factor a perfect square on the left side: (k + -2)(k + -2) = 40 Calculate the square root of the right side: 6.32455532 Break this problem into two subproblems by setting (k + -2) equal to 6.32455532 and -6.32455532.Subproblem 1
k + -2 = 6.32455532 Simplifying k + -2 = 6.32455532 Reorder the terms: -2 + k = 6.32455532 Solving -2 + k = 6.32455532 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + k = 6.32455532 + 2 Combine like terms: -2 + 2 = 0 0 + k = 6.32455532 + 2 k = 6.32455532 + 2 Combine like terms: 6.32455532 + 2 = 8.32455532 k = 8.32455532 Simplifying k = 8.32455532Subproblem 2
k + -2 = -6.32455532 Simplifying k + -2 = -6.32455532 Reorder the terms: -2 + k = -6.32455532 Solving -2 + k = -6.32455532 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + k = -6.32455532 + 2 Combine like terms: -2 + 2 = 0 0 + k = -6.32455532 + 2 k = -6.32455532 + 2 Combine like terms: -6.32455532 + 2 = -4.32455532 k = -4.32455532 Simplifying k = -4.32455532Solution
The solution to the problem is based on the solutions from the subproblems. k = {8.32455532, -4.32455532}
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