Question

How do you simplify `sqrt(1+x) + sqrt(1-x)`?

Answer 1

You square the equation and solve normally. The answer is 2.

Explanation:

Since both parts of the equation are being square rooted you can square the whole equation to turn `sqrt(1+x) + sqrt(1-x)` to `1+x+1-x`. Your then solve that expression normally to get you final answer.

Step by step:
`sqrt(1+x) + sqrt(1-x)`
`1+x+1-x`
`1+1+x-x`
Now we conbine the x's and ones to get our final answer of `2`