Answer:
Step-by-step explanation:
When you take the square root of a number, you want the number inside of the square root to be a positive sign since we can't take the square root of a negative.
So, what would make the [tex]\sqrt{x+y}[/tex] a positive?
(x+y) > 0
For each individual one, (Note: [tex]\sqrt{x+y} \neq \sqrt{x} +\sqrt{y}[/tex]
What would make [tex]\sqrt{x}[/tex] positive?
x > 0
What would make [tex]\sqrt{y}[/tex] positive?
y > 0
