k^2=9k-8

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Solution for k^2=9k-8 equation:


Simplifying
k2 = 9k + -8

Reorder the terms:
k2 = -8 + 9k

Solving
k2 = -8 + 9k

Solving for variable 'k'.

Reorder the terms:
8 + -9k + k2 = -8 + 9k + 8 + -9k

Reorder the terms:
8 + -9k + k2 = -8 + 8 + 9k + -9k

Combine like terms: -8 + 8 = 0
8 + -9k + k2 = 0 + 9k + -9k
8 + -9k + k2 = 9k + -9k

Combine like terms: 9k + -9k = 0
8 + -9k + k2 = 0

Factor a trinomial.
(1 + -1k)(8 + -1k) = 0

Subproblem 1

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 = 1

Subproblem 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 = 8

Solution

k = {1, 8}

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