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Old 09-19-2014   #4
Dragonballful23

 
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Join Date: Dec 2011
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Quote:
Originally Posted by john123 View Post
To find roots of any quadratic equation ,
one formula is there
if ax^2+bx+c is the given quadratic equation then roots are given by
x= ( -b±√b^2-4ac)/2a
There is also a shortcut(my teachers tell me not use ) -b/2 plus/minus square root of (b/2)^2-ac



Hey Mr.Hui can you tell me where the sqared option is?
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