Question

Simplify

Answer 1

Here is the term

Answer 2

We write \[\frac{2}{\sqrt{5}} = \frac{2}{\sqrt{5}} \times \frac{\sqrt{5}}{\sqrt{5}} \text{ since } \frac{\sqrt{5}}{\sqrt{5}}=1.\]

Answer 3

ok then what?

Answer 4

\[\frac{ 2 }{\sqrt{5}}=\frac{ 2*\sqrt{5} }{ \sqrt{5}*\sqrt{5}}=\frac{ 2\sqrt{5} }{ ? }\]

Answer 5

Simplify that :) We know that $$\sqrt{5} \times \sqrt{5} = 5.$$

Answer 6

And if you didnt know what everyone is doing is called rationalizing. :)

Answer 7

ok so like 2sqrt5/5?

Answer 8

Exactly :)

Answer 9

@ryan123345 has a good point
this is not "simplify"
this is "write in simplest radical form by rationalizing the denominator"

Answer 10

awesome thanks guys!!!:)

Answer 11

"simplify" is the lazy math teacher way of saying :"write the answer i want"

Answer 12

haha

Answer 13

Exactly. @satellite73