Question 942199
{{{ 3x^2+2x-1=0}}}


{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}


{{{x = (-2 +- sqrt( 2^2-4*3*(-1) ))/(2*3) }}}

{{{x = (-2 +- sqrt( 4+12 ))/6 }}}

{{{x = (-2 +- sqrt( 16 ))/6 }}}

{{{x = (-cross(2)1 +- cross(4)2)/cross(6)3 }}}

{{{x = (-1 +- 2)/3 }}}

exact solutions:

{{{x = (-1 + 2)/3 }}}

{{{highlight(x = 1/3) }}}

and

{{{x = (-1 -2)/3 }}}

{{{x = -3/3 }}}

{{{highlight(x = -1) }}}

approximate:{{{highlight(x = 0.33) }}}
{{{highlight(x = -1) }}}-exact