Question

How do you multiply `(2x + 6)^2`?

Answer 1

`(2x+6)^2=4x^2+24x+36`

Explanation:

using

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

we get

`(2x)^2+2*2x*6+6^2=4x^2+24x+36`