Question

Factorise the following.
A^3+27

Answer 1

Answer:

(a+3) (a²-3a+9)

Explanation:

a³ + 27

= (a)³ + (3)³

= (a+3) (a²-3a+3²)

= (a+3) (a²-3a+9)

Answer 2

Step-by-step explanation:

a^3 + 27

Following the identity: a^3+b^3 = (a+b) (a^2-ab+b^2)

a^3 + 27 can also be written as a^3+3^3

a^3+3^3 = (a+3) (a^2-3a+9)

Hope this helped!