Question

Factorise: a – b – (a)^2 + (b)^2​

Answer 1

Answer:

Step-by-step explanation:

a−b−a  

2

+b  

2

=(a−b)−(a  

2

−b  

2

)

                           =(a−b)−(a−b)(a+b)

                           =(a−b)[1−(a+b)]