# I Equation with surds

1. Apr 18, 2017

### dyn

Hi.
This is not a homework question but I saw this equation on an advert for a website.

(x+15)1/2 + x1/2 = 15

I tried squaring both sides of the equation but that didn't help. Can this equation be solved exactly or can it only be solved by iteration ?
Thanks

2. Apr 18, 2017

### Staff: Mentor

Try isolating one square root ($\sqrt {...} = ...$) before squaring, afterwards it should be clear how to solve for x.

3. Apr 18, 2017