# Simple problem

1. Feb 3, 2005

### EngTechno

I have got stuck with this simple problem,

x +x^1/2=6 ( x plus square root of x is equal to 6 )

Although I know the answer is 4, I don't know how to systmatically calculate this problem. Do you know? And how?

2. Feb 3, 2005

### Justin Lazear

Let u = $\sqrt{x}$, and then you have a quadratic in u.

--J