Question

Answer 1

Bài 1:

1: \(\sqrt{8}=2\sqrt{2}\)

2: \(\sqrt{32}=4\sqrt{2}\)

3: \(\sqrt{50}=5\sqrt{2}\)

4: \(\sqrt{98}=7\sqrt{2}\)

5: \(\sqrt{128}=8\sqrt{2}\)

6: \(\sqrt{288}=12\sqrt{2}\)

7: \(\sqrt{75}=5\sqrt{3}\)

8: \(\sqrt{162}=9\sqrt{2}\)

9: \(\sqrt{450}=15\sqrt{2}\)

Answer 2

đây hổng phải toán lớp 5 bạn ưi

Answer 3

Bài 2: 

1: \(2\sqrt{3}\cdot3\sqrt{27}=2\sqrt{3}\cdot9\sqrt{3}=54\)

2: \(3\sqrt{32}\cdot4\sqrt{2}=12\sqrt{2}\cdot4\sqrt{2}=96\)

3: \(-3\sqrt{15}\cdot3\sqrt{135}=-3\sqrt{15}\cdot9\sqrt{15}=-405\)

4: \(-2\sqrt{33}\cdot\sqrt{3}=-6\sqrt{11}\)

5: \(8\sqrt{6}\cdot\left(-2\sqrt{24}\right)=-8\sqrt{6}\cdot4\sqrt{6}=-192\)

6: \(\sqrt{98}\cdot3\sqrt{8}=7\sqrt{2}\cdot6\sqrt{2}=84\)