Posted by ROCKY on Tuesday, July 26, 2011 at 11:25pm.
compleletly factor the following expression
9y^216z^2

intermediate algebra  drwls, Wednesday, July 27, 2011 at 5:55am
It is the difference of two squares.
Use the standard rule
a^2 b^2 = (ab)(a+b)
The answer is
(3y 4z)(3y + 4z)