A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Let f(x) = x^2 + x + 2 and g(x) = 2x^2 + 5. Find f(g(x)). Show each step of your work.
anonymous
 one year ago
Let f(x) = x^2 + x + 2 and g(x) = 2x^2 + 5. Find f(g(x)). Show each step of your work.

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Vocaloid I just need to learn how to do the problem, not the answer.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2replace x in f(x) function by g(x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did that, I got: (2x^2+5)^2+2x^2+2

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2you forgot something \[ \huge\rm (2x^2+5)^2+\color{blue}{x}+2\] x = 2x^2 + 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So to solve, is it 2x^4 or 4x^4

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2\[ \huge\rm (2x^2+5)^2+\color{blue}{2x^2 +5}+2\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2\[ \huge\rm \color{reD}{x^2}+\color{blue}{x}+2\] \[ \huge\rm \color{ReD}{(2x^2+5)^2}+\color{blue}{2x^2 +5}+2\] x is 2x^2 + 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, so now we have to square x.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2yes( 2x^2 +5)^2 is same as (2x^2 +5) (2x^2 +5) so foil it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So now we combine like terms?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[4x^4+20x^2+25+2x^2+5+2\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So now I need to factor?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, is it? Good, my problem was I tried factoring that and had no idea how to do it.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2my pleasure and yes that's it they wants us to find f(g(x)) not factoring

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I fanned, so if I need anything, I'll make sure to tag you.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2thanks i'll try my best :=)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Nnesha I have one more problem that seems pretty easy.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think I may know how to solve it but graphing and radicals are my weakpoint.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Describe how to transform \[(\sqrt[6]{x ^{5}})^{7}\] into an expression with a rational exponent

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2alright remember this exponent rule \[\huge\rm \sqrt[m]{x^n} = x^\frac{ n }{ m }\] you can convert root to exponent form

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes I know this, it would be \[(x^\frac{ 5 }{ 6 })^7\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then you multiply 7 and 5?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2yep! right you already know

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2\[\huge\rm (x^m)^n = x^{ m \times n}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x^\frac{ 35 }{ 6 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And that is my answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0K, thanks. Just wanted to check my answer.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2your answer is correct you're a mathematician :=)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.