Question

19. (1) x² - y² + x² - y²​

Answer 1

Answer:

write full question . I am not understanding what a question

Answer 2

Answer:

2(x + y)(x - y)

Step-by-step explanation:

x² - y² + x² - y²​

= 2x² - 2y²

= 2(x² - y²)

= 2(x + y)(x - y)

Hope this helps! :)