Question

Factorise =27-125a^3-135a+225a^2​

Answer 1

Answer:

(3-5a)(3-5a)(3-5a)

Step-by-step explanation:

(3)^3 - (5a)^3 - 3(3)^2(5a) + 3(3)(5a)^2

a^3 - b^3 - 3a^2b +3ab^2 = (a- b)^3

a= 3, b = 5a

(3-5a)^3