+0  
 
0
235
1
avatar+8 

express with rational denominator

2√3

over

√5

 

please show working please help

Dazza  May 13, 2017
edited by Dazza  May 13, 2017
 #1
avatar+26720 
+1

Multiply by √5 divided by √5:

 

\(\frac{2\sqrt3}{\sqrt5}\rightarrow \frac{2\sqrt3\sqrt5}{\sqrt5 \sqrt5}\rightarrow \frac{2\sqrt{15}}{5}\)

.

Alan  May 13, 2017
edited by Alan  May 13, 2017

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