| √2 | 2 | |||
Wykaż że liczby a= | i b= | są równe | ||
| 4√2 | 4√8 |
| 20,5 | ||
a= | =20,25 | |
| 20,25 |
| 20,5 | 20,5 | |||
b= | = | =2−0,25 | ||
| (23)0,25 | 20,75 |
| 21 | ||
w b masz w liczniku 2 a nie √2 więc | =20,25 | |
| 20,75 |
| √2 | 4√22 | 4 | ||||
a= | = | = 4√ | = 4√2 | |||
| 4√2 | 4√2 | 2 |
| 2 | 4√24 | 16 | ||||
b= | = | = 4√ | = 4√2= a c.n.w. . ... | |||
| 4√8 | 4√8 | 8 |
| √2 | 2 | |||
a=b⇔ | = | ⇔√2*4√8=2*4√2 | ||
| 4√2 | 4√8 |