Exercice 1

Question

Calculer les expressions suivantes :

a) \(\sqrt{49}\)

b) \({\left(\sqrt{5}\right)}^{2}\)

c) \(\sqrt{4}\)

d) \({\sqrt{{(-6)}^{2}}}\)

e) \(\sqrt{100}\)

e) \(\sqrt{16}\times\sqrt{9}\).

Solution

Solution

a) \(\sqrt{49} =7\);

b) \({\left(\sqrt{5}\right)}^{2}=5\);

c) \(\sqrt{4}=2\);

d) \({\sqrt{{(-6)}^{2}}}=|-6|=6\);

e) \(\sqrt{100}=10\);

f) \(\sqrt{16}\times\sqrt{9}=4\times3=12\).