Question

Racionalize os denominadores

$a) \: \frac{2}{ \sqrt{3} }$

$b) \: \frac{ \sqrt{3} }{ \sqrt{5} }$

$c) \: \frac{1}{2 + \sqrt{2} }$
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Answer 1

A)

2/√3=2.(√3)/(√3).(√3)= 2√3/3

b)

√3/√5 =√3.√5/(√5).(√5)=√15/5

1/ 2+√2=1.(2-√2)/(2+√2).(2-√2)

1/2+√2= 2-√2/(2)²-(√2)²

1/2+√2= 2-√2/4-2

1/2+√2= 2-√2/2

1/2+√2= 1- (√2 )/2

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espero ter ajudado!

boa noite !