Question

1.Find the followingproduct using a suitableidentity.
(7x – 9y)(7x - 9y)
I want a full solution ​

Answer 1

Answer:

$(7x - 9y)(7x - 9y) \\ \\ = 49 {x}^{2} - 63xy - 63xy + 81 {y}^{2} \\ \\ = 49 {x}^{2} - 129xy + 81 {y}^{2}$

hope this much helps uh ❣️