Question

9m^4-n^2 (factor the expression)

Answer 1

use this formula a^2 - b^2 = (a - b) (a + b)
here we have ( (3m^2)^2 - n^2 ) = ------------------------?
here a = 3m^2 b = n

Answer 2

(3m^2 +n) (3m^2-n) ?? Thanks! @tgawade

Answer 3

Correct !! :)