Question

Racionalize os denominadores:

11/ raiz de 3

21/ raiz de 7

4/ 5 raiz de 2

Answer 1

a)$\frac{11}{\sqrt{3}}$= 11*√3/√3*√3= 11√3/3

b)$\frac{21}{\sqrt{2}}$= 21*√7/√7*√7= 21√7/7= 3√7

c)$\frac{4}{5\sqrt{2}}$= 4*5√2/5√2*5√2= 20√2/50= 2/5