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b). 6
c). -4
d). 8
Spokojnie liczone na kalkulatorze więc masz gwarancje :DD
Pozdro
b. (3+√3) (3-√3)=9-3=6
c. (√2-√6) (√2+√6)=2-6=-4
d. (3√2+√10) (3√2-√10) =18-10=8