Question

Given f(x)=x^2-8 and g(x)= (x+1)/x, find (g°f) (1)

Answer 1

to find (fog) multiply what the f(x) AND g(x) together.

Answer 2

(x²-8) × [ (x+1)/x ]

Answer 3

(x²-8)(x+1)
---------
x

x³ + x² - 8x - 8
--------------
x

Answer 4

to finis the problem, plug in 1 for x.

x³ + x² - 8x - 8
(into -------------- )
x

Answer 5

(I can use latex this or next time if you want)
Let me know if you \(\Large\color{ blue }{\Large {\bbox[5pt, white ,border:2px solid white ]{ need~~~help? \rm{\Huge✍} }}}\)

Answer 6

I got eight

Answer 7

Is it ftimes g or fog?

Answer 8

I believe it's fog. because it had that degree symbol not *

Answer 9

Solomon do I plug in 1 for all x's??

Answer 10

@SolomonZelman

Answer 11

these are my answers choices
a. 8/7
b. 8
c. 6/7
d. -8

and by solving I got 8. Am I correct?

Answer 12

by plugging in 1, i et
1 + 1 - 8 - 8
----------
1

= -14/1

But that is not an Upton -:(

Answer 13

I did (f×g)... oops

Answer 14

ooo no wonder why i was confused.

Answer 15

f(x)=x²-8
g(x)= (x+1)/x, find (g°f) (1)

(g° f)(x)= ( [x²-8] +1)/ [ x²-8]

(g° f)(1)= ( [1²-8] +1)/ [ 1²-8]

(g° f)(1)= ( -7 +1)/ -7

(g° f)(1)=-6 / -7 = 6/7

Option C

Answer 16

Sorry for my mistake.

Answer 17

It's fine(: Thanks you so much for the help!

Answer 18

Anytime ! (I was offline, sorry for late reply)