Question

If c(x) - x-3 and d(x) = x + 3, what is the domain of (cd)(x)?

Answer 1

Answer:

All Real numbers

Step-by-step explanation:

c(x)= x-3

d(x) = x+3

dc(x)= (x-3)(x+3)

$(a+b)(a-b)=(a^2-b^2)$

$dc(x) = (x^2-9)$

$x^2-9$ is defined for all values of x , And hence the domain of cd(x) will be set of all Real Numbers