8k^2=16k+64

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Solution for 8k^2=16k+64 equation:


Simplifying
8k2 = 16k + 64

Reorder the terms:
8k2 = 64 + 16k

Solving
8k2 = 64 + 16k

Solving for variable 'k'.

Reorder the terms:
-64 + -16k + 8k2 = 64 + 16k + -64 + -16k

Reorder the terms:
-64 + -16k + 8k2 = 64 + -64 + 16k + -16k

Combine like terms: 64 + -64 = 0
-64 + -16k + 8k2 = 0 + 16k + -16k
-64 + -16k + 8k2 = 16k + -16k

Combine like terms: 16k + -16k = 0
-64 + -16k + 8k2 = 0

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

Factor a trinomial.
8((-2 + -1k)(4 + -1k)) = 0

Ignore the factor 8.

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 '(4 + -1k)' equal to zero and attempt to solve: Simplifying 4 + -1k = 0 Solving 4 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1k = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1k = 0 + -4 -1k = 0 + -4 Combine like terms: 0 + -4 = -4 -1k = -4 Divide each side by '-1'. k = 4 Simplifying k = 4

Solution

k = {-2, 4}

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