Question

factorise a cube -27

Answer 1

Answer:

-19683 is the cube of -27.

hope this answer is helpful to you

Answer 2

Answer:

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

Step-by-step explanation:

a^3 - 27

= a^3 - 3^3

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

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