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Calculați:
a √2304 (√225-√1225)+√1600;
b √5. √25+√7-√49-√√9. √16;
=√1+7√25-√11-√36-2+√23-√9+3. √16; d√√√144+13+√3-√324+7√225-√64-7 (Urgentttt va roggg)