(4-z)(4z-1)=0

Solution for (4-z)(4z-1)=0 equation:

Simplifying
(4 + -1z)(4z + -1) = 0

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

Multiply (4 + -1z) * (-1 + 4z)
(4(-1 + 4z) + -1z * (-1 + 4z)) = 0
((-1 * 4 + 4z * 4) + -1z * (-1 + 4z)) = 0
((-4 + 16z) + -1z * (-1 + 4z)) = 0
(-4 + 16z + (-1 * -1z + 4z * -1z)) = 0
(-4 + 16z + (1z + -4z2)) = 0

Combine like terms: 16z + 1z = 17z
(-4 + 17z + -4z2) = 0

Solving
-4 + 17z + -4z2 = 0

Solving for variable 'z'.

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

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

Simplifying
-4 + z = 0

Solving
-4 + z = 0

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

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

Combine like terms: -4 + 4 = 0
0 + z = 0 + 4
z = 0 + 4

Combine like terms: 0 + 4 = 4
z = 4

Simplifying
z = 4
Subproblem 2
Set the factor '(1 + -4z)' equal to zero and attempt to solve:

Simplifying
1 + -4z = 0

Solving
1 + -4z = 0

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

Add '-1' to each side of the equation.
1 + -1 + -4z = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -4z = 0 + -1
-4z = 0 + -1

Combine like terms: 0 + -1 = -1
-4z = -1

Divide each side by '-4'.
z = 0.25

Simplifying
z = 0.25
Solution
z = {4, 0.25}