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1. calculati: (-radical 7)+(- radical 3)+(2radical 7)-2 radical 3​

Răspuns :

(-radical 7) + (-radical 3) + (2 radical 7) - 2 radical 3 =

= - radical 7 - radical 3 + 2 radical 7 - 2 radical 3 =

= radical 7 - 3 radical 3