Question

Racionalize os denominadores a) 11 /raiz de 3 b) 21 / raiz de 7 c)4/ 5 raiz de 2

Answer 1

a) 11 / √3

= 11/√3  * √3/√3

= 11√3 / √9

= 11√3 / 3

b) 21 / √7

= 21/√7  *  √7/√7

= 21√7 / √49

= 21√7 / 7

= 3√7

c) 4/5√2

= 4/5√2  *  √2/√2

= 4√2 / 5√4

= 4√2 / 5 * 2

= 2√2 / 5