Question

PLEASE HELP WILL FAN AND MEDAL


Let f(x)=(x^2+3x-4) and g(x)=(x+4). Show all work.
a. find f*g and state the domain.
b. find f/g and state the domain.

Answer 1

@AlexandervonHumboldt2

Answer 2

@iGreen

Answer 3

@Here_to_Help15

Answer 4

@campbell_st

Answer 5

f*g requires you to multiply the 2 functions

\[(x^2 + 3x -4) \times (x +4)\]

the result will be a degree 3 polynomial.

are there any values of x that can't be put into the new function..? the input of x values is the domain

for f/g you have

\[\frac{x^2 + 3x -4}{x + 4}\]


look to see if there are any values of x that you can't have

so looking at this, you might factor the numerator. and see if there are common factors...

hope it helps

Answer 6

I'm confused.

Answer 7

@Here_to_Help15 ??

Answer 8

so what do you think the domains of f and g are..?

Answer 9

That's what I'm confused about, I haven't done these type of problems before, or at least understood them.