8 messages · Page 1 of 1 (latest)
use difference of squares for this one like they tell you to
so first find the square root of 3^8
and once u find that
you can factorize it
so basically
Write $(3^{8}-1)$ in the form of $a^2-b^2$ and then write it in $(a-b)(a+b)$
honest swallow
minor glade
summer furnace