Question 475449
{{{x^2+14x+4=0}}}
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{a=1}}}, {{{b=14}}}, {{{c=4}}}
 {{{x = (-14 +- sqrt( 14^2-4*1*4 ))/(2*1) }}} 
 {{{x = (-14 +- sqrt( 180))/2 }}} 
 {{{x = (-14 +- 6sqrt( 5))/2 }}}
 {{{x = -7 +-3sqrt( 5) }}}  
 {{{x1 = -7 -3sqrt( 5)=-13.708 }}} 
 {{{x2 = -7 +3sqrt( 5)=-0.292}}}