Question

216a3 - 729b3 resolve into factors

Answer 1

Answer:

(6a-9b) (36a^2 + 54ab + 81b^2)

Step-by-step explanation:

216a^3-729b^3

=(6a)^3 - (9b)^3

=(6a-9b) {(6a)^2+(6a×9b)+(9b)^2)}

=(6a-9b)(36a^2 + 54ab + 81b^2).

Answer 2

Using:-
a^3-b^3=(a-b)*(a^2+ab+b^2)