Question

rapid cat fac (√8-√2) totul la a 2 a

Answer 1

$( \sqrt{8} - \sqrt{2} )^2=(2 \sqrt{2} - \sqrt{2} )^2=(2 \sqrt{2} )^2-2 \cdot 2 \sqrt{2} \cdot \sqrt{2} + \sqrt{2} ^2= \\ =8-8+2=0+2=2$