(5n-4)(n-1)=0

Solution for (5n-4)(n-1)=0 equation:

Simplifying
(5n + -4)(n + -1) = 0

Reorder the terms:
(-4 + 5n)(n + -1) = 0

Reorder the terms:
(-4 + 5n)(-1 + n) = 0

Multiply (-4 + 5n) * (-1 + n)
(-4(-1 + n) + 5n * (-1 + n)) = 0
((-1 * -4 + n * -4) + 5n * (-1 + n)) = 0
((4 + -4n) + 5n * (-1 + n)) = 0
(4 + -4n + (-1 * 5n + n * 5n)) = 0
(4 + -4n + (-5n + 5n2)) = 0

Combine like terms: -4n + -5n = -9n
(4 + -9n + 5n2) = 0

Solving
4 + -9n + 5n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(4 + -5n)(1 + -1n) = 0

Subproblem 1
Set the factor '(4 + -5n)' equal to zero and attempt to solve:

Simplifying
4 + -5n = 0

Solving
4 + -5n = 0

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

Add '-4' to each side of the equation.
4 + -4 + -5n = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5n = 0 + -4
-5n = 0 + -4

Combine like terms: 0 + -4 = -4
-5n = -4

Divide each side by '-5'.
n = 0.8

Simplifying
n = 0.8
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 = {0.8, 1}