Odpowiedzi

2009-09-14T00:28:37+02:00
1
a) 3 √11 - √11/3 =2⅔√11
b) √2 /5 + √2/10=2√2/10+√2/10=3√2/10
c) (3√5)²/(5√3)² =9×5/25×3=3/5

2.
a)³√128 -³√54 =∛64×2-∛27×2=4∛2-3∛2=1∛2=∛2
b) ³√0,004 + ³√32=∛0,001×4+∛8×4=0,1∛4+2∛4=2,1∛4