Question 706944
{{{x^2-6x -16 < 0}}}....replace {{{-6x}}} with {{{2x-8x}}}

{{{x^2+2x-8x-16<0}}}.....group

{{{(x^2+2x)-(8x+16)<0}}}

{{{x(x+2)-8(x+2)<0}}}

{{{(x-8)(x+2)<0}}}

{{{x-8<0}}} if {{{x<8}}}

{{{x+2<0}}} if {{{x<-2}}}

or

{{{-2<x<8}}}

interval:

({{{-2}}},{{{8}}})

 {{{ graph( 600, 600, -10, 10, -25, 10,(x-8)(x+2)) }}}

shade the area from {{{x=-2}}} to {{{x=8}}} (excluding these points) down under {{{x-axis}}}