Question

(v) x2 - 1 - 2y - y?​

Answer 1

Answer:

$2x - 1 - 2y - y \\ = 2x - 1 - 3y \\ \\ {x}^{2} - 1 - 2y - y \\ = {x}^{2} - 1 - 3y$

sorry I was not able to get your question.but I have solved it . you refer both.hope it works.

Answer 2

Answer:

x2 - (1 + y)2

= (x + y + 1) (x - y - 1)