Daca x+y=-2radical3 si x la adoua-y la adoua =4radical6 aflati x-y

Răspuns :

x² - y² = 4√6
(x + y)×(x-y)=4√6
(2√3)×(x-y)=4√6
x-y=4√6 ÷ 2√3 ⇒ x-y=2√2
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