4k^2-20k=0

Solution for 4k^2-20k=0 equation:

Simplifying
4k2 + -20k = 0

Reorder the terms:
-20k + 4k2 = 0

Solving
-20k + 4k2 = 0

Solving for variable 'k'.

Factor out the Greatest Common Factor (GCF), '4k'.
4k(-5 + k) = 0

Ignore the factor 4.
Subproblem 1
Set the factor 'k' equal to zero and attempt to solve:

Simplifying
k = 0

Solving
k = 0

Move all terms containing k to the left, all other terms to the right.

Simplifying
k = 0
Subproblem 2
Set the factor '(-5 + k)' equal to zero and attempt to solve:

Simplifying
-5 + k = 0

Solving
-5 + k = 0

Move all terms containing k to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + k = 0 + 5

Combine like terms: -5 + 5 = 0
0 + k = 0 + 5
k = 0 + 5

Combine like terms: 0 + 5 = 5
k = 5

Simplifying
k = 5
Solution
k = {0, 5}