Question

Factorise a-b-a^2-b^2​

Answer 1

Answer:

a-b+2ab

I hope it is right

Answer 2

Answer:

a - b - a2 + b2

= (a - b) - (a2 - b2)

= (a - b) - (a - b) (a + b)

= (a - b) (1 - a - b)