Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
General Form You have already seen how to graph a quadratic function when it is in its standard form. Recall that the standard form of a quadratic function looks like: y=a(xh)^2+k But how do you graph a quadratic function when it is in its general form? The general form of a quadratic function looks like this: y=ax^2+bx+c
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
So how does your author define general form?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
h=x, k=y... the problem I'm having with this one is splitting the 3 in 3x^2...?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Its just asking to rewrite it not graph it... heres what I have so far:
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
So you want hk form?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
10 on both sides Y10=3x^224x 24/2=12 12^2=144 Y10=3x^224x+144
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Its in standard form, I want general form(:
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Let's write it like this: dw:1362857059987:dw
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Now complete the square inside the parentheses
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
OH! gcf! of course!!:D
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1362857161791:dw
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Thank you(: I forgot to look for a gcf
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Y10=3x^224x+144 Now factor the GCF y10=3(x^28x+48) y10=3(x4)(x+12) +10 to both sides Y=3(x4)(x+12) +10 Right?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
how did you get 16^^
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Oh wait... I know
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
No. You cannot add 48 to one side without adding it to the other side. Did you see in my example that I added 16 inside the parentheses to complete the square? But I was really adding 48 to the right side because there is a 3 outside the parentheses. So then I subtracted 48 so there would be a net change of 0. Of course I could have added 48 to the left side which would have accomplished the same purpose.
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
16 is the number that completes the square for x^2+8x
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
1 sec..
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Y10=3x^224x GCF Y10=3(x^28x) Complete the square 8/2=4 4^2=16 y10=3(x^28x16) Simplify y10=3(x4)^2 +10 to both sides y=3(x4)^2 +10 Right?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
and by simplify I mean find the binomial...(:
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
So let's multiply out your result: \[y=3(x4)^2+10=3(x^28x+16)+10=3x^224x+48+10=\]
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
\[3x^224x+58\]
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Is that the problem you started with?
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
If it isn't, then what you have done is changed the original problem instead of keeping the original problem and expressing it in another form.
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
What am I doing wrong?
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
When you add 48 to the right side, you then have 2 choices: 1. subtract 48 from the right side 2. Add 48 to the left side.
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
y10=3x^224x y10=3x^224x+48 +48 y+38=3x^224x+48
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
y+38=3(x^28x+16) y+38=3(x4)^2 Right so far?
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
Ok I solved it out on paper(: thank you for helping me
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
24/2=12 12^2=144........
 one year ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
That is true. Not sure it is very useful.
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
y10=3x^224x+144
 one year ago

that1chick Group TitleBest ResponseYou've already chosen the best response.0
k, never mind
 one year ago
See more questions >>>
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.