Question 17145
{{{ 2x^2 + 4x - 1 = 0 }}}
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
x=[-4 +- sqrt(16 - 4*2*-1)]/2(2)
<br>
x=[-4 +- sqrt(16+8)]/4
<br>
x=(-4/4) +- (sqrt(24)/4)
<br>
x=-1 +- 2sqrt(6)/4
<br>
x=-1 +- sqrt(6)/2
<P>
-Prabhat