Question

find the product by using suitable identities ( x + 2y ) ( x^2 - 2xy + 4y^2 )​

Answer 1

Answer:

x^ 2 -  2y^2

Step-by-step explanation

( x + 2y ) ( x^ 2- 2xy + 4y^2 )​

let a= x and b= 2y

=  ( x^ 2- 2xy + 4y^2 )=   identity (a-b)^2

= x+2y ( x - 2y) = identity a^ 2 - b^2

= x^ 2 -  2y^2