Question

For which values of x is the function y = 5 / (x-4)(x+5) not defined? Select all that apply.

A) -5
B) -4
C) 4
D) 5

Answer 1

`f(x)=(5)/((x-4)(x+5))\\\\(x-4)(x+5)\\eq0\iff x-4\\eq0\ and\ x+5=0\\\\x\\eq4\ and\ x\\eq-5\\\\Answer:\boxed{-5\ and\ 4}`