Question

How do you solve `\sqrt { x + 4} = 2`?

Answer 1

`x=0`

Explanation:

you square both sides to get 4 then cancel equal terms on both sides of the equation where x=0
then check the solution so `0+4=2` so divide `4` and `2` and get `2` then get zero so `x=0`.
`(sqrt(x+2))^2=2^2`
`rArr x+4=4`
`rArr x=0`