3.
1) 3√⁸/₉ = 3√8 = 3√8 = √8 = √4 * √2=2√2
√9 3
2) ¹/₃√50= √25 * √2 = 5√2 = ⁵/₃ √2=1²/₃ √2≈1,6√2
3 3
3) ²/₃√32=2√16 * √2 =2*4√2 =8√2 = 2²/₃ √2≈2,6√2
3 3 3
4) ¹/₂√18=√9*√2 =3√2 = 1,5√2 - меньшее значение
2 2
4. 1 = 1 =2⁻⁶
64 2⁶
5. 89400000000000000000=8,94*10¹⁹