Help with problem

[Han]

(08-05-2019 12:32 PM)Marcel Wrote:  Hi!
For myself I prefert to do a simplification before using de domain function!
After that, the domain is OK…
Choice A with -5.
Marcel

Unfortunately, "simplifying" here is actually division, whereby \( x-5 \) in both the numerator and denominator would divide each other out EXCEPT when \( x=5 \) because this would lead to division by 0.