Question

[hương giang]

tính

a) \(\sqrt{25.16}\)

b)\(\sqrt{12,1.250}\)

c)\(\sqrt{0,4}.\sqrt{8,1}.\sqrt{1600}\)

d)\(\sqrt{2,7}.\sqrt{3}.\sqrt{360}\)

e)\(\sqrt{20,8^2-19,2^2}\)

f)\(\sqrt{13^2-12^2}\)

g)\(\sqrt{2+\sqrt{3}}.\sqrt{2-\sqrt{3}}\)

h)\(\sqrt{3+\sqrt{5}}.\sqrt{3-\sqrt{5}}\)

i) \(2\sqrt{3}.\left(\sqrt{3-1}\right)+\left(1+\sqrt{3}\right)^2-2\sqrt{6}\)

k) \(\sqrt{2-\sqrt{2}}.\sqrt{2+\sqrt{2}}\sqrt{8}\)

l) \(\left(\sqrt{3-\sqrt{5}}.\sqrt{3+\sqrt{5}}\right)^2\)

Answer 1

[Diệu Huyền]

a, \(\sqrt{25.16}=5.4=20\)

Chắc vậy á.

Answer 2

[hương giang]

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