Sunday, June 23, 2013

Solve using the quadratic formula:3x^2 - 4x + 3 = 0

Given the quadratic
equation:


3x^2 - 4x + 3 = 0


We
will use the quadratic formula to solve for x.


==> x
= [ -b + sqrt(b^2-4ac)]/2a


==> a = 3     b= -4    
c= 3


==> x1= [
4+sqrt(16-4*3*3)]/2*3


             = [ 4+ sqrt(-20) /
6


              = 4+ 2sqrt5*i)/
6


              = ( 2+
sqrt5*i)/3


==> x2=
(2-sqrt5*i)/3


Then we have two complex
roots.


==> x = { (2+sqrt5*i)/3  ,   
(2-sqrt5*i)/3  }

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