Solving for "a" in Square Root Equation

[Asla]

Homework Statement

Get the value of a if
$\sqrt{6-\sqrt{a}}$+$\sqrt{6+\sqrt{a}}$=$\sqrt{14}$

The Attempt at a Solution

nothing succesfull
Feel free to move this thread,..I actually place it here to tap more brains

 

[tiny-tim]

square?

 

[Asla]

square?

What do you mean?I square both sides?

 

[tiny-tim]

square as many sides as you can find!

 

[Asla]

square as many sides as you can find!

It gives me this:
12+$\sqrt{36-a}$=14
could I be going wrong somewhere?

 

[Asla]

Damn it I had never felt so foolish,..thanks I got it

 

[Nugso]

It gives me this:
12+$\sqrt{36-a}$=14
could I be going wrong somewhere?

(a+b)² = a² + 2ab + b²

Nevermind. You've already gotten it!