Question

Complete the following: [(x − y) − 3][(x − y) +3]= (____)^2- 9

Answer 1

Answer:

Complete expression will be $(x-y)^2-9$

Step-by-step explanation:

We have given expression $[(x-y)-3][(x-y)+3]=(....)^2-9$

We have to complete the expression

We know the algebraic equation $(a+b)(a-b)=a^2-b^2$

So$[(x-y)-3][(x-y)+3]$ can be written as $(x-y)^2-9$

So in place of blank space there will be $(x-y)^2$

And the complete expression will be $(x-y)^2-9$