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Find the cube of each of the following b...

Find the cube of each of the following binomial expressions: `2x+3/x` (ii) `4-1/(3x)\ `

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(i)`2x+3/x`
`(2x+3/x)^3`
`=8x^3+(27)/x^3+(18x)/x(2x+3/x)`
`=8x^3+(27)/x^3+(18xx2x)+(18xx3/x)`
`=8x^3+(27)/x^3+36x+(54)/x`

(ii) `4-1/(3x)\ `
`(4-1/(3x))^3=4^3-(1/(3x))^3-3\(4)\(1/(3x))\(4-1/3x)`
`=64-1/(27x^3)-4/x\(4-1/(3x))`
`=64-1/(27x^3)-(16)/x+4/(3x^2)`
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