Question 449917
{{{4x^3-15x^2=4x}}}

<==> {{{4x^3 - 15x^2 - 4x = 0}}}

<==> {{{x(4x^2 - 15x - 4) = 0}}}

<==> {{{x(4x + 1 )(x -  4) = 0}}}

==>  x = 0, -1/4, 4.