Question

find the product using suitable identity (x^2+3xy+9y^2) (x^2-3xy+9y^2) (x^2-9y^2)

Answer 1

Answer:

-(9y)^3

Step-by-step explanation:

put x=0 and y =1,then product =-729

put y=0 and x=1,then product =1

Theirfore the product of products =-729

implies -(9y)^3,at y =1