Question 346099
{{{-2x^2-16x+24=0}}}
{{{x^2+8x-12=0}}}
Use the quadratic formula,
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
 {{{x = (-8 +- sqrt( 8^2-4*1*(-12) ))/(2*1) }}} 
 {{{x = (-8 +- sqrt( 64+48 ))/2 }}} 
{{{x = (-8 +- sqrt( 112 ))/2 }}} 
{{{x = (-8 +- 4sqrt( 7 ))/2 }}}
{{{highlight(x = -4 +- 2sqrt( 7 ))) }}}
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{{{graph(300,300,-10,10,-10,10,-2x^2-16x+24)}}}