Prove that root 5 minus root 2 is irrational number

- Prove that root 5 minus 3 root 2 is an irrational number
- Prove that 4 minus 5 root 2 is an irrational number
- Prove that 2 root 7 minus root 5 is an irrational number
- Given root 2 is an irrational number prove that 5 minus root 2 is also an irrational number
- √ 5
- Неравенства с нуля
- Неравенства как решать
- Неравенства с корнем