Question

(-x+y)(-x-y)
use suitable identity ​

Answer 1

Step-by-step explanation:

Identity - (a+b)(a-b)

So, a²-b²

Therefore, Answer - (x²-y²)

Answer 2

Answer:

⭐ refer to the attachment ⭐

$formula \: used \\ \\ a^{2} - b ^{2} = ( a + b)(a - b)$

hope it helps uH ✔