Question

How do you factor x^6-9 ?

Answer 1

Same as the last.. use a sub..

u=x^3
\[\LARGE u^2-9\]

Answer 2

Factor that..
\[\LARGE (u-3)(u+3)\]
Plug in for u..
\[\LARGE (x^3-3)(x^3+3)\]

Answer 3

okay! Thank you! :)