Question 312503
{{{f(x)=a(x+4)(x-5/3)}}} where {{{a}}} is any non-zero constant.
{{{f(x)=a(x^2-(5/3)x+4x-20/3)}}}
{{{f(x)=a(x^2+(7/3)x-(20/3))}}}
or 
{{{f(x)=a(3x^2+7x-20)}}}