3k^2-9k=54

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Solution for 3k^2-9k=54 equation:


Simplifying
3k2 + -9k = 54

Reorder the terms:
-9k + 3k2 = 54

Solving
-9k + 3k2 = 54

Solving for variable 'k'.

Reorder the terms:
-54 + -9k + 3k2 = 54 + -54

Combine like terms: 54 + -54 = 0
-54 + -9k + 3k2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-18 + -3k + k2) = 0

Factor a trinomial.
3((-3 + -1k)(6 + -1k)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -1k)' equal to zero and attempt to solve: Simplifying -3 + -1k = 0 Solving -3 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1k = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1k = 0 + 3 -1k = 0 + 3 Combine like terms: 0 + 3 = 3 -1k = 3 Divide each side by '-1'. k = -3 Simplifying k = -3

Subproblem 2

Set the factor '(6 + -1k)' equal to zero and attempt to solve: Simplifying 6 + -1k = 0 Solving 6 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1k = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1k = 0 + -6 -1k = 0 + -6 Combine like terms: 0 + -6 = -6 -1k = -6 Divide each side by '-1'. k = 6 Simplifying k = 6

Solution

k = {-3, 6}

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