Zapisz w postaci iloczynu pierwiastków i oblicz :
√4·9=
√64·16=
√16·25=
√121·169=
√36·49
√81·144=
Prosiła bym o rozwiązanie ; )
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√4·9= √4*√9 = 2*3 = 6
√64·16= √64*√16 = 8*4 = 32
√16·25= √16*√25 = 4*5 = 20
√121·169= √121*√169 = 11*13 = 143
√36·49 = √36*√49 = 6*7 = 42
√81·144= √81*√144 = 9*12 = 108