Question

cat face √49supra√100;√21:√7

Answer 1

1.$\frac{ \sqrt{49} }{ \sqrt{100} } = \frac{7}{10} =0.7$
2.$\frac{ \sqrt{49} }{ \sqrt{21} } = \frac{7}{ \sqrt{21} }$
Mai departe amplicima fractia $\frac{7}{ \sqrt{21} } cu \sqrt{21}$
si obtinem $\frac{7 \sqrt{21} }{21}$ simplificam prin 7 si obtinem:$\frac{ \sqrt{21} }{3}$
3.$\frac{ \sqrt{49} }{ \sqrt{7} } = \frac{7}{ \sqrt{7} }$ urma pasii de mai sus:
$\frac{7}{ \sqrt{7} } amplificam \sqrt{7}$
 $\frac{7 \sqrt{7} }{7} = \sqrt{7}$ se obtine dupa ce se simplifica 7 cu 7

Answer 2

√49/√100=√7²√10²=7/10

√21/√7=√(3·7)/√7=√3·√7/√7=√3