Use f(x) = 5x − 2 and g(x) = 4 − x2 to evaluate the expression. (a) (f c

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

PLEASE CHECK

Use 
f(x) = 5x − 2
 and 
g(x) = 4 − x2
 to evaluate the expression.
(a)    
(f  g)(x)
 
−7
  

(b)    
(g  f)(x)
 
−141
 
Oct 18th, 2017

Thank you for the opportunity to help you with your question!

f(x)=5x-2

g(x) =4-x^2

(f g) (x) =f[g(x)]

             =f[4-x^2]

             =5(4-x^2)-2

             =20-5x^2-2

             =18-5x^2



(g f)  (x) =g[f(x)

              =g[5x-2]

              =4-[5x-2]^2

              =4-[25x^2-20x+4]

               =20x-25x^2 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 30th, 2015

thsi is answer is an exact number

Jun 30th, 2015

u have not specified value of x

what is x=?

Jun 30th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Oct 18th, 2017
...
Oct 18th, 2017
Oct 19th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer