Question

13. Factorise the term a-b-a^2+b^2 is

(a + b) (1-a-b)
(a - b) (1-a+b)
(a - b) (1-a-b)
None of these​

Answer 1

Answer:

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

Step-by-step explanation:

(a−b)−(a

2

−b

2

)

=(a−b)−(a−b)(a+b)

= (a - b)(1 - a - b)=(a−b)(1−a−b)