Question

factorise the expression:3x³y-243xy³​

Answer 1

Answer:

3xy(x+9y)(x-9y)

Step-by-step explanation:

3x^3y-243xy^3

3xy(x^2-9y^2)

3xy(x+9y)(x-9y)

Identity used=a^2-b^2=(a+b)(a-b)

Answer 2

Answer:

(3xy)(x - 9y)(x + 9y)

Step-by-step explanation:

solution is in the attachment