Question

racionalize o denominador

Answer 1

a) 8 / √2 =
 8 x √2 / √2 x √2 =
 8 x √2 / √4 =
 8 x √2 / 2 =
4 x √2

b) 10 / √3 - 1 =
10 x √3 + 1 / √3 - 1 x √3 + 1 =
10√3 + 10 / √3² - 1² =
10√3 + 10 /3 - 1 =
10√3 + 10 / 2 =
5√3 + 5

c)5 + 3√5 / √5 = 
5 + 3√5 x √5 / √5 x √5 = 
5√5 + 3√25 / √25 = 
5√5 + 15 / 5 =
√5 + 3