descompui radicalii in numere prime
50| 5
10 | 5
2 | 2
1 deci V50 = 5V2
72 | 2
36 |2
18| 2
9 | 3
3 | 3
1 V72 = 6V2
3×5V2 + 6V2= 15V2 + 6V2= 21V2
Răspuns:
[tex]3 \times 5\sqrt{2} + 6 \sqrt{2} = 15 \sqrt{2} + 6 \sqrt{2 } = 21 \sqrt{2} [/tex]
