Question

FACTORISE THE FOLLOWING: 9m^3-24mn+ 16n^2​

Answer 1

Step-by-step explanation:

It's wrong. It should be,

$9m^2-24mn+ 16n^2$

$= 9 {m}^{2} - 12mn - 12mn + 16 {n}^{2} \\ = 3m(3m - 4n) - 4n(3m - 4n) \\ = (3m - 4n)(3m - 4n) \\ = {(3m - 4n)}^{2}$