A community for students.
Here's the question you clicked on:
 0 viewing
kelsey1
 2 years ago
f(x)=x^2+5x+7 Find f(3a4)
kelsey1
 2 years ago
f(x)=x^2+5x+7 Find f(3a4)

This Question is Closed

tacamry
 2 years ago
Best ResponseYou've already chosen the best response.0so wat am pose to be doing?

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0substitute 3a4 to all the x in the equation

kelsey1
 2 years ago
Best ResponseYou've already chosen the best response.0yes I know, but I'm not sure how to do that like can you show me the steps

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1f(x)=x^2+5x+7 f(3a4) = (3a4)^2 + 5(3a 4) + 7 Simplify the expression

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1354855276611:dw For the first term

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Bro, the first term is negative

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0However there is a negative sign in fron of x so you have to multiply the first term with negative one.

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0Hero buddy, patience... lol

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1But anyway, the difficult part is done. Let the person finish it themselves.

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0I assume you'll have the idea to do the next ones from here on?

kelsey1
 2 years ago
Best ResponseYou've already chosen the best response.0I know how to do foil and all the math yet are you solving for x or leaving it as a quadratic?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Nothing nowhere says to solve for x. In fact, when I posted the hint I gave you. I left a comment below saying to "simplify the expression". How did you interpret "solve for x" from that?

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0x becomes a, so x is out of the picture. if your asked to simplify the expression then I guess all you have to do is the equation hero did setup for you.

kelsey1
 2 years ago
Best ResponseYou've already chosen the best response.0Well I meant "a" and my problem was that I thought I was solving for "a".

Stephchen
 2 years ago
Best ResponseYou've already chosen the best response.0then I guess you're all set :)

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1@kelsey1, will you please just simplify the expression and let us know what you get?
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.