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Simplifying 2k2 + 16k = 18 Reorder the terms: 16k + 2k2 = 18 Solving 16k + 2k2 = 18 Solving for variable 'k'. Reorder the terms: -18 + 16k + 2k2 = 18 + -18 Combine like terms: 18 + -18 = 0 -18 + 16k + 2k2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-9 + 8k + k2) = 0 Factor a trinomial. 2((-9 + -1k)(1 + -1k)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-9 + -1k)' equal to zero and attempt to solve: Simplifying -9 + -1k = 0 Solving -9 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1k = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1k = 0 + 9 -1k = 0 + 9 Combine like terms: 0 + 9 = 9 -1k = 9 Divide each side by '-1'. k = -9 Simplifying k = -9Subproblem 2
Set the factor '(1 + -1k)' equal to zero and attempt to solve: Simplifying 1 + -1k = 0 Solving 1 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1k = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1k = 0 + -1 -1k = 0 + -1 Combine like terms: 0 + -1 = -1 -1k = -1 Divide each side by '-1'. k = 1 Simplifying k = 1Solution
k = {-9, 1}
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