## toadytica305 2 years ago (FOG)(X) f(x)= x^2+2x and g(x)= 1/x

1. lgbasallote

do you mean (f o g)(x)?

yes

4. lgbasallote

that means you substitute g(x) into EVERY x of f(x)...so what is your g(x)?

1/x

(1/x)^2 + 2(1/x)

7. lgbasallote

that's right..simplify

1/(x^2) + 2/x ?

9. lgbasallote

good there you go...are you tasked to combine it?

nope.. Don't think so it just says "find (f o g)(x)?"

11. lgbasallote

well that's your answer then...if you want you can combine it to be safe..use x^2 as LCD $\frac{1}{x} + \frac{2x}{x^2} = \frac{1 + 2x}{x^2}$

12. lgbasallote

the first term is supposed to be $$\large \frac{1}{x^2}$$