Question 555084
{{{ x^2+35x-150=0 }}}
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{ a = 1 }}}
{{{ b = 35 }}}
{{{ c = -150 }}}
{{{x = (-35 +- sqrt( 35^2-4*1*(-150) ))/(2*1) }}}
{{{x = (-35 +- sqrt( 35^2 + 600 ))/2 }}}
{{{x = (-35 +- sqrt( 1225 + 600 ))/2 }}}
{{{x = (-35 +- sqrt( 1825 ))/2 }}}
{{{x = (-35 +- 42.72)/2 }}}
{{{ x = 7.72/2 }}}
{{{ x = 3.86 }}}
and
{{{x =  -77.72/2 }}}
{{{x = -38.86 }}}
check answers:
{{{ x^2+35x-150=0 }}}
{{{ (-38.86)^2 + 35*(-38.86) - 150 }}}
{{{ 1510.0996 - 1360.1 - 150 = 0 }}}
{{{ 1510.0996 - 1510.1 = 0 }}}
{{{ .0004 = 0 }}}
close enough
You can check the other root