Question

(1/3x-2y)^3 evaluaute this with the identity (a-b)^3

Answer 1

Answer:

1/27x³-1/8³ -2/3x²y+4xy²

Step-by-step explanation:

first we write the formula of (a-b)³=a³-b³ -3a²b+3ab²

then, (1/3x-2)³=(1/3x)³-(2y)³-3×1/3×1/3×2+3×1/3×2×2=

1/27x³ -2y³ -2/3x²y+4xy²

I hope it is helpful for you