Question 318744
{{{-12z+zt-3t+4z^2 }}}
{{{4z^2-12z + zt-3t}}}
{{{4z(z-3) +t(z-3)}}}
{{{(4z+t)(z-3)}}}

...
{{{ 6x^2-13xy+6y^2}}}
{{{(3x - 2y)(2x - 3y)}}}