Question

Efectuati urmatorul calcul aplicand formula a+b(a-b)=a la a doua minus b la a doua.
(radical 6 + radical 2)(radical 6-radical 2 )
Urgent va rog frumos!

Answer 1

(radical 6 + radical 2)(radical 6-radical 2 )=(radical din 6)^2-(radical din 2)^2=6-2=4

Answer 2

 [tex]in\;acest\;caz\;\;\;a=\sqrt6\;\;si\;\;b=\sqrt2\;;\\ \rightarrow\;\;\;(\sqrt6+\sqrt2)(\sqrt6-\sqrt2)=(\sqrt6)^2-(\sqrt2)^2=6-2= ...[/tex]