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Find the product of the following binomi...

Find the product of the following binomials;
(i)`(2x+y)(2x+y)`
(ii) `(a+2b)(a-2b)`

Text Solution

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Given:
`(i) (2x+y)(2x+y)`
`=> (2x)(2x+y)+y(2x+y)`
`=> (2x)^2+2xy+2xy+(y)^2`
`=> 4x^2+2xy+2xy+y^2`
`=> 4x^2+y^2+4xy`
(ii) `(a+2b)(a-2b)`
Using identity, `a^2-b^2=(a-b)(a+b)`
` ...
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