Question

3.
(a+b)3 – 8 factorise​

Answer 1

Answer:

Rewrite 8 as 23 .

Step-by-step explanation:

Since both terms are perfect cubes, factor using the difference of cubes formula, a3−b3=(a−b)(a2+ab+b2) a 3 - b 3 = ( a - b ) ( a 2 + a b + b 2 ) where a=b and b=2 .