Question

FACTORISE ----- a^2 - b^2 - a - b​

Answer 1

Answer:

Step-by-step explanation:

Given :

To factorize,

a² - b² - a - b

Solution :

We know that,

a² - b² = (a + b) (a - b)

__

a² - b² - a - b

⇒ (a² - b²) - (a + b)

⇒ (a + b) (a - b) - 1 (a + b)

⇒ (a + b) [(a - b) - 1]

⇒ (a + b) (a - b - 1)

Answer 2

question: factorise a² - b² - a- b

solution:

a²- b² - a- b

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

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

hope it helps you....