Question

Factorise:- a^3-b^3-a+b

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Answer 1

Given a^3 +b^3 +a + b

a3 + b3 = (a + b) (a^2 - ab + b^2 ).

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

=(a+b)(a^2 + ab +b^2 +1).

Answer 2

Answer:

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