Question

Let f=(x) = x2 – 16 and g(x) = x + 4. Find f/g and its domain.

Answer 1

factorize f(x)
so f(x)=(x-4)(x+4)
now f(x)/g(x)=(x-4)(x+4)/(x+4)=(x-4)
its domain is all real no.
in your options you have mentioned that x not equal to ither 4 or -4
but the domain is all the real no. with 4 and -4

Answer 2

OK thx for the help :p