Question

A=(2+radical din 2): 2

Answer 1

$\displaystyle{ A = \frac{2+ \sqrt{2}}{2} }$

$\displaystyle{ A = \frac{2}{2} + \frac{\sqrt{2}}{2} }$

$\displaystyle{ A = 1 + \frac{\sqrt{2}}{2} }$