Question

Factorise the following.
a-b-a²+b²​

Answer 1

Step-by-step explanation:

(a-b)-(a²-b²)

(a-b)-[(a+b)(a-b)]

(a-b)[1-(a+b)]

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

Answer 2

Step-by-step explanation:

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♡ ↪Given polynomial is

a−b−a

2

+b

2

=(a−b)−(a

2

−b

2

)

=(a−b)−(a−b)(a+b)

=(a−b)[1−(a+b)]

♡

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