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What does quadratic formula do?

Guest Jul 17, 2017
 #1
avatar+7155 
+2

If you have an equation in this form:

 

\(ax^2+bx+c=0\)

 

, and then solve that equation for  x , you will get

 

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

 

, which is the quadratic formula.  smiley

 

This might help explain it better:  https://www.youtube.com/watch?v=i7idZfS8t8w

hectictar  Jul 17, 2017
 #2
avatar+3 
+2

Beautifully succinct :) 

 

If interested, a friend of mine just posted a video showing the derivation fo the quadratic formula: https://www.youtube.com/watch?v=qhbcRv5L-lI

docphys  Jul 18, 2017
 #3
avatar+92806 
+1

Hi Docphys  cool 

 

Welcome to web2.0calc forum  :))    laugh  

 

Sorry your post got temporarily blanked.    That happens sometimes :/     angry

Melody  Jul 19, 2017

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