Question

Write the following cubes in expanded form (3-1/y)^3

Answer 1

Answer: 9-(1/y)³-9/y(3-1/y)

Step-by-step explanation:As (x-y)³= x³-y³-3xy(x-y)

So (3-1/y)³= 3³-(1/y)³-3(3)(1/y)(3-1/y)

=9-(1/y)³-9/y(3-1/y)