2k^2=16k+18

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Solution for 2k^2=16k+18 equation:


Simplifying
2k2 = 16k + 18

Reorder the terms:
2k2 = 18 + 16k

Solving
2k2 = 18 + 16k

Solving for variable 'k'.

Reorder the terms:
-18 + -16k + 2k2 = 18 + 16k + -18 + -16k

Reorder the terms:
-18 + -16k + 2k2 = 18 + -18 + 16k + -16k

Combine like terms: 18 + -18 = 0
-18 + -16k + 2k2 = 0 + 16k + -16k
-18 + -16k + 2k2 = 16k + -16k

Combine like terms: 16k + -16k = 0
-18 + -16k + 2k2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-9 + -8k + k2) = 0

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

Ignore the factor 2.

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 '(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 = {-1, 9}

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