Question

Determinati cel mai mic numar natural mai mic decat $\frac{6}{\sqrt{10}-2 }$

Answer 1

6/(√10 -2)=6(√10 +2)/(10-4)=√10 +2

√9 <√10 <√16

3<√10<4

3+2<√10 +2<4+2

5 <√10 +2 <6

Cel mai mic numar natural mai mic decat 6/(√10 -2) este 5.