Question 89805
5x^2+x=3 
5x^2+x-3=0 [ax+by+c=0] 
.
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} [plug-in the values and solve for x]
.
{{{x = (-(1) +- sqrt( (1)^2-(4)(5)(-3) ))/(2*5) }}} 
.
{{{x = (-1 +- sqrt( 1-(-60) ))/(10) )}}}
.
 {{{x = ((-1 +- sqrt( 1+60) ))/(10)) }}}
.
  {{{x = ((-1 +- sqrt( 61) ))/(10)) }}}
.
   {{{x = ((-1 + sqrt( 61) ))/(10)) }}} = 0.681
   {{{x = ((-1 - sqrt( 61) ))/(10) )}}} = -0.881