A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Using the completingthesquare method, rewrite f(x) = x2 + 4x − 1 in vertex form.
f(x) = (x + 2)2 + 1
f(x) = (x + 2)2
f(x) = (x + 2)2 + 4
f(x) = (x + 2)2 − 5
anonymous
 one year ago
Using the completingthesquare method, rewrite f(x) = x2 + 4x − 1 in vertex form. f(x) = (x + 2)2 + 1 f(x) = (x + 2)2 f(x) = (x + 2)2 + 4 f(x) = (x + 2)2 − 5

This Question is Open

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0welcome to open study

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me with this problem

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what does it mean by "rewrite f(x) = x2 + 4x − 1 in vertex form."

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@marigirl @moazzam07

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0factorizing, so basically when you expand it out again, you should have your original equation.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but how do i turn fx to vetex form

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0o i didnt see where you said factor sorry

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0vertex form also means turning point on graph. i.e at which point on the x axis will the parabola have its minimum point. Best way to go about is start factorizing the equation given to you f(x) = x^2 + 4x − 1 May start factorising first part  x^2+4x .. what will that get us to

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0let try it another way .. i am going to factorise it to \[f(x)= (x+2)^{2}\] This will ensure I have it in vertex form... now i need to manipulate it a little so that my final equation will look like \[f(x)=x ^{2}+4x1\] so now, what constant value will i need to add to the top equation to make it same as the second equation ..

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0see what u get when you expand f(x)=(x+2^2: we get x^2+4x+4 ..... but i need x^2+4x1 .. so what number do i need to add/minus so i wil get to x^2+4x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0where u get that from lol im so confused

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0sorry i dont think i helped...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oooo ok i understand wher i am i was confused with the vertex form i mixed it with a different formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no actually you did i just thought to hard

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0ok, well you can always expand the answers given to you and see which is the original equation
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.