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(x-3y/5)^3
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It is quite easy and goes like this
Step-by-step explanation:
(x-3y)³/5³
= {x³ -(3y)³ -3*x*3y(x-3y)} / 125 (since 5³=125)
= {x³ - 27y³ -9xy(x-3y)}/ 125
= (x³ - 27y³ -9x²y + 27xy²)/ 125
Therefore the answer is (x³ - 27y³ -9x²y + 27xy²)/ 125
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