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Va rog e urgent
1. Calculati:
a) (3+√2)(3-√2); b) (3√2-1)(3√2+1); c) (√3-√2)(√3+√2); d) (√3+√5)(√3-√5); e) (4√2-3√3)(4√2+3√3); f) (5-√17)(5+√17); g) (3√2-4)(3√2+4)
Dau coroana celui care imi raspunde repede, e urgent