Question

factorise (a+b) ^3-a-b​

Answer 1

Answer:

(a+b){(a+b-1)(a+b+1)}

Step-by-step explanation:

(a+b)^3-a-b

=(a+b)^3-(a-b)

=(a+b){(a+b)^2-1^2}

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

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