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April 14th, 2018, 08:15 AM  #1 
Newbie Joined: Apr 2018 From: India Posts: 6 Thanks: 0  Solve quadratic equation in no time
Solve quadratic equation in no time $$ax^2+bx+c=0\implies x=\frac{b\pm\sqrt{b^24ac}}{2a}$$ Last edited by greg1313; April 14th, 2018 at 01:37 PM. 
April 14th, 2018, 08:48 AM  #2 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,671 Thanks: 2651 Math Focus: Mainly analysis and algebra 
The quadratic equation gives, of itself, zero understanding of the ideas an concepts of solving general polynomial (and other) equations, which is the whole point of teaching the other methods.

April 14th, 2018, 09:00 AM  #3 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 
No such animal as "no time". Btw, are you spamming: you posted that twice... 
April 14th, 2018, 09:04 AM  #4 
Senior Member Joined: May 2016 From: USA Posts: 1,310 Thanks: 551  
April 14th, 2018, 09:07 AM  #5 
Senior Member Joined: May 2016 From: USA Posts: 1,310 Thanks: 551  The difference between a crammer and a teacher: one gives formulas to memorize whereas the other gives concepts to understand.

April 14th, 2018, 10:16 AM  #6 
Global Moderator Joined: Dec 2006 Posts: 20,828 Thanks: 2160  

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equation, quadratic, solve, time 
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