20n^2-40n+20=0

Solution for 20n^2-40n+20=0 equation:

Simplifying
20n2 + -40n + 20 = 0

Reorder the terms:
20 + -40n + 20n2 = 0

Solving
20 + -40n + 20n2 = 0

Solving for variable 'n'.

Factor out the Greatest Common Factor (GCF), '20'.
20(1 + -2n + n2) = 0

Factor a trinomial.
20((1 + -1n)(1 + -1n)) = 0

Ignore the factor 20.
Subproblem 1
Set the factor '(1 + -1n)' equal to zero and attempt to solve:

Simplifying
1 + -1n = 0

Solving
1 + -1n = 0

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

Add '-1' to each side of the equation.
1 + -1 + -1n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1n = 0 + -1
-1n = 0 + -1

Combine like terms: 0 + -1 = -1
-1n = -1

Divide each side by '-1'.
n = 1

Simplifying
n = 1
Subproblem 2
Set the factor '(1 + -1n)' equal to zero and attempt to solve:

Simplifying
1 + -1n = 0

Solving
1 + -1n = 0

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

Add '-1' to each side of the equation.
1 + -1 + -1n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1n = 0 + -1
-1n = 0 + -1

Combine like terms: 0 + -1 = -1
-1n = -1

Divide each side by '-1'.
n = 1

Simplifying
n = 1
Solution
n = {1, 1}