Question

factorise
a^2-b^2-a-b​

Answer 1

Answer:

(a+b)×(a-b-1)

Step-by-step explanation:

a^2-b^2-a-b

factorise with a^2-b^2=(a-b)(a+b)

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

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

factor out a+b

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