For what value of x is the rational expression below equal to zero?

Answer:
x=4
Step-by-step explanation:
We want to find the the expression
(x-4)
------------------ = 0
(x+5) (x-1)
This occurs when the numerator is equal to zero
x-4 =0
Add 4 to each side
x-4+4 = 0+4
x = 4