Question

How do you solve `sqrt(4n) =2` and find any extraneous solutions?

Answer 1

`color(blue)(n=1`

Explanation:

`sqrt(4n)=2`

square each side

`:,(sqrt(4n))^2=(2)^2`

`:.sqrt(4n)*sqrt(4n)=4n`

`:.4n=4`

`:.color(blue)(n=1`