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Simplifying 6k2 = -60k + -126 Reorder the terms: 6k2 = -126 + -60k Solving 6k2 = -126 + -60k Solving for variable 'k'. Reorder the terms: 126 + 60k + 6k2 = -126 + -60k + 126 + 60k Reorder the terms: 126 + 60k + 6k2 = -126 + 126 + -60k + 60k Combine like terms: -126 + 126 = 0 126 + 60k + 6k2 = 0 + -60k + 60k 126 + 60k + 6k2 = -60k + 60k Combine like terms: -60k + 60k = 0 126 + 60k + 6k2 = 0 Factor out the Greatest Common Factor (GCF), '6'. 6(21 + 10k + k2) = 0 Factor a trinomial. 6((7 + k)(3 + k)) = 0 Ignore the factor 6.Subproblem 1
Set the factor '(7 + k)' equal to zero and attempt to solve: Simplifying 7 + k = 0 Solving 7 + k = 0 Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + k = 0 + -7 Combine like terms: 7 + -7 = 0 0 + k = 0 + -7 k = 0 + -7 Combine like terms: 0 + -7 = -7 k = -7 Simplifying k = -7Subproblem 2
Set the factor '(3 + k)' equal to zero and attempt to solve: Simplifying 3 + k = 0 Solving 3 + k = 0 Move all terms containing k to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + k = 0 + -3 Combine like terms: 3 + -3 = 0 0 + k = 0 + -3 k = 0 + -3 Combine like terms: 0 + -3 = -3 k = -3 Simplifying k = -3Solution
k = {-7, -3}
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