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Find the product of the following binomi...

Find the product of the following binomials: (i) `(3/4x+5/6y)(3/4x-5/6y)` (ii) `(2a+3/b)(2a-3/b)`

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(i) `(3/4x+5/6y)(3/4x-5/6y)``=(3/4x)^2+(5/6y)^2`
`=9/16x^2+25/36y^2`

(ii) `(2a+3/b)(2a-3/b)`
`=(2a)^2+(3/b)^2`
`=4a^2+9/(b)^2`
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