Question 1132148
{{{8^(2x) - 27^(2y)}}}

={{{(2^3)^(2x) - (3^3)^(2y)}}}

={{{(2^x - 3^y) (2^x + 3^y) (2^(2x)-2^x*3^y  + 3^(2y)) (2^(2 x)+2^x*3^y  + 3^(2 y))}}}

=>the non-trivial factors