I have an equivalent algebra math problem and I still don't know how you solve it.

It starts like:

1. Take a number

2. Multiply the two numbers on either side of your number

3. Add 1 to your number

4. Take the square root of this answer

5. What do you notice?

6. Prove this is true for any number

Now I know that the prove means it has to have some type of algebra in it. But what I get stuck on is5. What do you noticeCan somebody help please because it has really been annoying me

Thank you