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 Open

rizwan_uetBest ResponseYou've already chosen the best response.2
dw:1358703755414:dw
 one year ago

texaschic101Best ResponseYou've already chosen the best response.0
does this help ?.... http://www.purplemath.com/modules/quadform.htm
 one year ago

Yahoo!Best ResponseYou've already chosen the best response.0
\[\frac{ b \pm \sqrt{b^24ac} }{ 2a }\]
 one year ago

shamimBest ResponseYou've already chosen the best response.0
is called quadratic equation
 one year ago

shamimBest ResponseYou've already chosen the best response.0
the solution of this quadratic equation is \[x=\frac{ b \pm \sqrt{b ^{2}4ca} }{ 2a }\]
 one year ago

abb0tBest ResponseYou've already chosen the best response.0
\[\frac{ b \pm \sqrt{b^24ac} }{ 2a }\] where you have a polynomial in the form \[ax^2 + bx +c = 0\]
 one year ago

AccessDeniedBest ResponseYou've already chosen the best response.0
It is possible to figure out this formula by solving that quadratic equation using the method of completing the squares. It is also interesting to note some small things about the formula that may help remember it easier: \(\displaystyle x = \frac{b}{2a} \pm \frac{\sqrt{b^2 4ac}}{2a} \) The first term is the vertex xvalue. This formula in a sense says that the two roots are a distance of \(\displaystyle \frac{\sqrt{b^2  4ac}}{2a}\) from the vertex, in position on the xaxis. (I mean, the horizontal distance) The discriminant portion \(b^2  4ac\) can also be used as a sort of shortcut to figure out more about the roots you'll find. It is under a square root, so we can tell that only nonnegative values give real solutions. If it is zero, then we see that we are adding + 0 to the vertex; i.e., the vertex is also the one root.
 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.