Question

write in expanded form (1/3x-2/3y)³​

Answer 1

Answer:

(5x−3y)3

 

We know that

(a−b)3=a3−b3−3ab(a−b)

 

Therefore,

(5x−3y)3=(5x)3−(3y)2−3×5x×3y(5x−3y)

(5x−3y)3=125x3−27y3−45xy(5x−3y)

(5x−3y)3=125x3−27y3−225x2y+135xy2

 

Hence, this is the answer.