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
Evaluate:
(xy + 4) (xy - 4)
6 Likes
(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