Question

Find x-y

Answer 1

someone please

Answer 2

@Erak

Answer 3

can you post a screenshot or draw out the function?

Answer 4

sure

Answer 5

thanks

Answer 6

no thank you!

Answer 7

So one thing we could have is

\[\Large f(x) = \frac{2}{x}+9\]
\[\Large g(x) = x^2\]

Answer 8

so that would be the two separated?

Answer 9

and the first step?

Answer 10

So one thing we could have is

\[\Large f(x) = \frac{2}{x}+9\]
\[\Large g(x) = x^2\]


Notice what happens when we replace every copy of 'x' with g(x)



\[\Large f(x) = \frac{2}{x}+9\]
\[\Large f({\color{red}{x}}) = \frac{2}{{\color{red}{x}}}+9\]
\[\Large f({\color{red}{g(x)}}) = \frac{2}{{\color{red}{g(x)}}}+9\]
\[\Large f({\color{red}{g(x)}}) = \frac{2}{{\color{red}{x^2}}}+9\]

So I replaced every 'x' with g(x). Then I replaced the g(x) on the right hand side with x^2

Answer 11

So to sum things up

If
\[\Large f(x) = \frac{2}{x}+9\]
\[\Large g(x) = x^2\]
then
\[\Large f(g(x)) = \frac{2}{x^2}+9\]

Answer 12

yes @iwanttogotostanford

Answer 13

they just want to know the functions f(x) and g(x)