Question

factorise this please​

Answer 1

27 - 125a^3 - 135a+ 225a^2

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

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

=> a= 3, b = 5a

so, factors are (3-5a)^3

or (3-5a)(3-5a)(3-5a) answer