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Shido88
 2 years ago
Find the Vertex:
f(x)= 3x^27x+6
Shido88
 2 years ago
Find the Vertex: f(x)= 3x^27x+6

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Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1@saifoo.khan helpppp lol

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Hey. To find vertex there's a shortcut.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1to find the xcordinate, use this formula: b/2a

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1that will give me the vertex ?

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Yes. "xcordinate" of vertex.

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1vertex is (h,k) right? so i believe that is the "h" ?

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Lol. Use GOogle. Jk.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Okay. so now use 7/6 to find it. y = 3x^27x+6 y = 3(7/6)^2 7(7/6) + 6 solve.

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1got decimal :( hate decimal

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1so the vertex would be : (7/6, 6.24) ?

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1VERTEX SHOULD BE 7/6. _

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1CALM DOWN !! CAPS WAR XD

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1ONE NEGATIVE SIGN RUINS EVERYTHING. >_<

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1so 7/6 because its opposite of 7/6 ?

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1you suppose to change it everytime ?

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1how come my teacher didn't change it _____

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1No. we calculated the xcordinate wrong in the first place.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1\[\frac{b}{2a} \to \frac{(7)}{2(3)}\to \frac{7}{6} \to \frac 76\]

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1ohhhhhhhhh i see now lmao hhahaha :D

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1omfg...my whole problem is wrong, thanks saif ! lol : XD

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1hmm instead of 121/10 should i just leave it as 10.08 cuz i have to graph this afterward ?

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1great now i gotta calculate xint and yint : let see......

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Sure. Same thing. Depends on in what format your teacher wants

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1stuck lol....find xintercept?

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.16=3x^27x <stuck here..

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Use quadratic formula

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1https://www.khanacademy.org/math/algebra/quadratics/quadratic_formula/v/quadraticformula1

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1but the way my teacher did it was to set y=0 and just add and divide stuff on left and right side...which is confusing but i suppose we can use quadratic aswell :)

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Your teacher must have used the "completing the square" method. It's hella confusing. It confuses me too. :/

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1yeah thats what that was, completing the square lol.... ok i got y= 7+ sqrt(23)/6 and what's next ?

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1i dont think u can reduce it down or anything right? and u can't even square root a negative

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1https://www.khanacademy.org/math/algebra/quadratics/quadratic_formula/v/quadraticformula1

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1No. We can't reduce.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1u can't even square root a negative Yes you're very right.

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1ohh i get it, it's 7+ 23i/6

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Roots are: 14 and 0.

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Roots are: 3 and 2/3

Shido88
 2 years ago
Best ResponseYou've already chosen the best response.1was that you on the video? https://www.khanacademy.org/math/algebra/quadratics/quadratic_formula/v/quadraticformula1

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.1Haha. Ofcourse not.
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