The expanded form of (3x – 5)3 is
We have,
(3x – 5)3 = (3x)3 – (5)3 – 3 (3x) (5) (3x – 5)
= 27x3 – 125 – 45x (3x – 5)
= 27x3 - 125 – 135x2 + 225x
= 27x3 – 135x2 + 225x - 125
Hence, option D is correct