Question 1000983

{{{g(x)=2x^2-6x-1}}} =>{{{a=2}}},{{{b=-6}}},{{{c=-1}}}


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

{{{x = (-(-6) +- sqrt( (-6)^2-4*2*(-1) ))/(2*2) }}} 

{{{x = (6 +- sqrt( 36+8 ))/4 }}} 

{{{x = (6 +- sqrt( 44 ))/4 }}} 


{{{x = (6 +- sqrt( 4*11 ))/4 }}}

{{{x = (cross(6)3 +- cross(2)sqrt( 11 ))/cross(4)2 }}}

{{{x = (3 +- sqrt( 11 ))/2 }}}

exact solutions:

{{{x = (3 + sqrt( 11 ))/2 }}}
or
{{{x = (3 - sqrt( 11 ))/2 }}}

approximate solutions:

{{{x = 3.16 }}}
or
{{{x = -0.16 }}}


{{{ graph( 600, 600, -10, 10, -10, 10, 2x^2-6x-1) }}}