Question

5
_________
4 + sqrt (2

Answer 1

Is your question to rationalise this?
\[\frac{ 5 }{ 4+ \sqrt{2} }\]

Answer 2

to simplify

Answer 3

Rationalising the denominator will get the fraciton in a simpler form. Do you know how to do this or would you like me to explain?

Answer 4

i take the denominator and multiply it to the top and the bottom .
right ??

Answer 5

Almost, but you have to remember to flip the sign of the irrational part. So for example, if your fraction was:
\[\frac{ 2 }{3 + \sqrt{5} }\]
Then you would multiply top and bottom by:
\[3-\sqrt{5}\]

Does this look familiar? Are you able to apply this to your question?

Answer 6

is this it