Question

Cum se calculeaza 1 supra radical din 2 +2 +1 supra 2-radical din 2

Answer 1

$\displaystyle\frac{1}{\sqrt{2}+2}+\displaystyle\frac{1}{2-\sqrt{2}}=\displaystyle\frac{2-\sqrt{2}+2+\sqrt{2}}{\left(2+\sqrt{2}\right)\left(2-\sqrt{2}\right)}=\displaystyle\frac{4}{4-2}=2$

Answer 2

(1/√2+2)+ 2+1/2-√2= (2-√2+2+√2)/ (2+√2)(2-√2)=2