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

fg and

Domain: All real number. All real number or

Explanation:

fg means product of two given function f(x) and g(x)

where,  

and

Now, we have to find fg

So, fg=

Substitute f(x) and f(x)

Using distributive property simplify above expression and we get,  

We can see it is cubic polynomial. So, domain of cubic polynomial is all real number.  

Domain: All real number or

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step-by-step explanation:

sorry no step by step

answer: 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

step-by-step explanation: