Question

Factorise : 9(x-y) ³ - 16(x-y)
​

Answer 1

Step-by-step explanation:

taking x-y as 'a'

then,

9a^3 - 16a

a(9a^2 -16)

Answer 2

Answer:

9x³ + 9y³ - 27x²y - 27xy² - 16x + 16y is the answer

Step-by-step explanation:

9(x-y) ³ - 16(x-y)

9(x³ + y³ - 3x²y - 3xy²)  - 16(x - y)

9x³ + 9y³ - 27x²y - 27xy² - 16x + 16y