Question

By using the standard formulae. Expand the following (5x-3y)³

Answer 1

Step-by-step explanation:

We have,

(5x−3y)

3

We know that

(a−b)

3

=a

3

−b

3

−3ab(a−b)

Therefore,

(5x−3y)

3

=(5x)

3

−(3y)

2

−3×5x×3y(5x−3y)

(5x−3y)

3

=125x

3

−27y

3

−45xy(5x−3y)

(5x−3y)

3

=125x

3

−27y

3

−225x

2

y+135xy

2

Hence, this is the answer.