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Simplifying 7k2 + 62k + -9 = 0 Reorder the terms: -9 + 62k + 7k2 = 0 Solving -9 + 62k + 7k2 = 0 Solving for variable 'k'. Factor a trinomial. (-9 + -1k)(1 + -7k) = 0Subproblem 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 + -7k)' equal to zero and attempt to solve: Simplifying 1 + -7k = 0 Solving 1 + -7k = 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 + -7k = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7k = 0 + -1 -7k = 0 + -1 Combine like terms: 0 + -1 = -1 -7k = -1 Divide each side by '-7'. k = 0.1428571429 Simplifying k = 0.1428571429Solution
k = {-9, 0.1428571429}
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