4k^2-4k=8

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Solution for 4k^2-4k=8 equation:


Simplifying
4k2 + -4k = 8

Reorder the terms:
-4k + 4k2 = 8

Solving
-4k + 4k2 = 8

Solving for variable 'k'.

Reorder the terms:
-8 + -4k + 4k2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -4k + 4k2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-2 + -1k + k2) = 0

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

Ignore the factor 4.

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 '(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

Solution

k = {-1, 2}

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