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Oblicz korzystajac z wlasnosci pierwiastkow;
√2 * √8 = √16=4
√0,9 * √10 = √9=3
2√7 * 4√7= 8*7=56
(3√7)² 9*7=63
Usun niewymiernosc z mianownika ;
a.10/√5 = 10/√5 * √5/√5 = 10√5/5= 2√5
b.3√2/5√3= 3√2/5√3 * √3/√3 = 3√6/15 = 1/5√6