Question

Factorize each of the following expression:
3x³y − 243xy³

Answer 1

$$\begin{gathered} 3x^{3}y-243x{y}^3 \\ =3xy(x^2-81y^2) \\ =3xy[x^2-(9y{)}^2] \\ =3xy(x-9y\left)\right(x+9y) \end{gathered}$$