a)
\(3\sqrt{5}=\sqrt{9.5}=\sqrt{45}\)
\(2\sqrt{6}=\sqrt{4.6}=\sqrt{24}\)
\(4\sqrt{2}=\sqrt{16.2}=\sqrt{32}\)
Do 24 < 29 < 32 < 45 => \(\sqrt{24}< \sqrt{29}< \sqrt{32}< \sqrt{45}\)
=> \(2\sqrt{6}< \sqrt{29}< 4\sqrt{2}< 3\sqrt{5}\)
b)
\(5\sqrt{2}=\sqrt{25.2}=\sqrt{50}\\ 3\sqrt{8}=\sqrt{9.8}=\sqrt{72}\\ 2\sqrt{15}=\sqrt{4.15}=\sqrt{60}\)
Do 39 < 50 < 60 < 72 nên \(\sqrt{39}< \sqrt{50}< \sqrt{60}< \sqrt{72}\)
=> \(\sqrt{39}< 5\sqrt{2}< 2\sqrt{15}< 3\sqrt{8}\)
a: 3căn5=căn 45
2căn 6=căn 24
căn 29=căn 29
4căn2=căn 32
=>2căn6<căn29<4căn2<3căn5
b: 5căn 2=căn 50
căn 39=căn 39
3căn 8=căn 72
2căn 15=căn60
=>căn 39<5căn2<2căn15<3căn8