Question

Rationalize the denominator of 4
-----
5+2

Answer 1

is it just \[\frac{ 4 }{ 5+2 }\]

Answer 2

yess.

Answer 3

then you would just do the addition and that would be your answer.

Answer 4

That's what i would think, but the answers look like this,

20 - √2
-------
23

Answer 5

are you sure there are no radicals in the original?

Answer 6

OH, yeah, there are. It's 5 + √2 below the denominator.

Answer 7

okay, then you would rationalize by multiplying by the denominator.

Answer 8

i Don't get what you mean?

Answer 9

Would it be 23 or 27 for the denominator?