Question

a^3–b^3+1+3ab factorise​

Answer 1

Step-by-step explanation:

using identity :

a³-b³=(a-b)(a²+b²+ab) (a+b)²=a²+b²+2ab

(a-b)(a²+b²+ab)+1+3ab

(a-b)(a+b)²+1+4ab.

(a-b)a²+b²+2ab+1+4ab

(a-b)(a+b)(a+b)+6ab+1

a²-b²(a+b)+6ab+1

Answer 2

(a+b)^3

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