Question

What is the product of (2x+3) and (2x -3)?

Answer 1

`(2x+3)(2x-3)`

This is a case of a law

`(a-b)(a+b)=a^2-b^2`

Here,
`2x=a`
`3=b`

Apply
`(2x)^2-3^2`

`4x^2-9`