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Write each of the expanded form: (1/(3x)...

Write each of the expanded form: `(1/(3x)-2/(5y))^3` `(1/(3x)-2/(5y))^3`

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`(1/(3x)-2/(5y))^3` `(1/(3x)-2/(5y))^3`
`=(1/(3x))^3-3\(1/(3x))^2\(2/(5y))+3\(1/(3x))\(2/(5y))^2-(2/(5y))^3`
By using the identity
`(a+b)^3 = a^3+ b^3+ 3ab\(a+b)`
`=x^3/(27)-(2x^2y)/(15)+(4xy^2)/(25)-(8y^3)/(125)`
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