I'm just stuck on a problem where I have to simplify an expression. This is the expression:
$\sqrt{x^2\:-\:\left(\frac{x}{2}\right)^2}$
The textbook has the answer as:
$\frac{\sqrt{3}x}{2}$
I have no idea how to get to that. I've tried to figure it out for the past hour and I have tried online solvers but I can't understand what the steps are. Any help would be very much appreciated.
Thanks!