k^2-11k=-18

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Solution for k^2-11k=-18 equation:


Simplifying
k2 + -11k = -18

Reorder the terms:
-11k + k2 = -18

Solving
-11k + k2 = -18

Solving for variable 'k'.

Reorder the terms:
18 + -11k + k2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + -11k + k2 = 0

Factor a trinomial.
(2 + -1k)(9 + -1k) = 0

Subproblem 1

Set the factor '(2 + -1k)' equal to zero and attempt to solve: Simplifying 2 + -1k = 0 Solving 2 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1k = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1k = 0 + -2 -1k = 0 + -2 Combine like terms: 0 + -2 = -2 -1k = -2 Divide each side by '-1'. k = 2 Simplifying k = 2

Subproblem 2

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 = 9

Solution

k = {2, 9}

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