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5-√5+√5-2-√20-3-6-2√5

Răspuns :

5-√5+√5-2-2√5-3-6-2√5=-6-4√2
5-√5+√5-2-√20-3-6-2√5=>5-2-2√5-3-6-2√5=>-6-4√5