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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: 7,344 Thanks: 2466 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: 12,912 Thanks: 883 
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: 1,084 Thanks: 446  
April 14th, 2018, 09:07 AM  #5 
Senior Member Joined: May 2016 From: USA Posts: 1,084 Thanks: 446  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: 19,293 Thanks: 1684  

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equation, quadratic, solve, time 
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