KnowledgeBoat Logo
|

Mathematics

Evaluate:

(xy + 4) (xy - 4)

Identities

6 Likes

Answer

(xy + 4) (xy - 4)

Using the formula

[∵ (x + y)(x - y) = x2 - y2]

= (xy)2 - 42

= x2y2 - 16

Hence, (xy + 4) (xy - 4) = x2y2 - 16

Answered By

4 Likes


Related Questions