Question

Calcule e simplifique
a) √2 • √5

b)√3 • √15

c)√2 • √98

d)√200 • √2

e)√50 • √3•6

f)√0,4 • √10

Answer 1

a) √2 • √5 = raiz de 10

b)√3 • √15 = raiz de 45 = raiz de 3^2 * 5 = 3 raiz de 5

c)√2 • √98 = raiz de 196 = 14

d)√200 • √2 = raiz de 400 = 20

e)√50 • √36 = raiz de 1800 = raiz de 2^2 * 2 * 3^2 * 5^2 = 30 raiz de 2

f)√0,4 • √10 = raiz de 4 = 2