Question

factorise (a-b)•(a2+ab+b2)-(a+b)

Answer 1

Answer:

Step-by-step explanation:

Take out minus

(a-b)(a^2+b^2+2ab)+(a-b)

(a-b) [ (a^2+b^2+2ab)]

a^2 + b^2 + 2ab can be written as (a +b)^2

(a-b) (a+b)^2

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