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Simplifying K2 + 4K + -105 = -9 Reorder the terms: -105 + 4K + K2 = -9 Solving -105 + 4K + K2 = -9 Solving for variable 'K'. Reorder the terms: -105 + 9 + 4K + K2 = -9 + 9 Combine like terms: -105 + 9 = -96 -96 + 4K + K2 = -9 + 9 Combine like terms: -9 + 9 = 0 -96 + 4K + K2 = 0 Factor a trinomial. (-12 + -1K)(8 + -1K) = 0Subproblem 1
Set the factor '(-12 + -1K)' equal to zero and attempt to solve: Simplifying -12 + -1K = 0 Solving -12 + -1K = 0 Move all terms containing K to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1K = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1K = 0 + 12 -1K = 0 + 12 Combine like terms: 0 + 12 = 12 -1K = 12 Divide each side by '-1'. K = -12 Simplifying K = -12Subproblem 2
Set the factor '(8 + -1K)' equal to zero and attempt to solve: Simplifying 8 + -1K = 0 Solving 8 + -1K = 0 Move all terms containing K to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1K = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1K = 0 + -8 -1K = 0 + -8 Combine like terms: 0 + -8 = -8 -1K = -8 Divide each side by '-1'. K = 8 Simplifying K = 8Solution
K = {-12, 8}
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