Question 1174683
{{{4x^3-9x^2-9x=0}}} ....factor out {{{x}}}

{{{(4x^2-9x-9)x=0 }}}.......write {{{-9x}}} as {{{-12x+3x}}}

{{{(4x^2-12x+3x-9)x=0}}}.......group terms

{{{((4x^2-12x)+(3x-9))x=0}}}

{{{(4x(x-3)+3(x-3))x=0}}}

{{{(4 x + 3) (x - 3)x=0}}}

roots are:

{{{x=0}}}
{{{x=3}}}
{{{x=-3/4}}}