Question

Rationalize the denominator of 4/ 5 + square root 2

Answer 1

\[\frac45 + \sqrt 2 ... or... \frac4{5 + \sqrt2}\]

Answer 2

the second one

Answer 3

I mean, which one of my interpretations is correct ? ..

Answer 4

oh ok!

Answer 5

:)

Answer 6

I''m pretty sure she means:
\[(\frac{4}{5\sqrt{2}})(\frac{\sqrt{2}}{\sqrt{2}})=\frac{4 \sqrt {2}}{5(2)}=\frac{4 \sqrt {2}}{10}=\frac{2 \sqrt {2}}{5}\]

Answer 7

\[\frac4{5+\sqrt2} \times \frac{5-\sqrt2}{5-\sqrt2}\]

\[= \frac{4(5-\sqrt2)}{5^2 - (\sqrt2)^2}\]

Solve the same to get your answer !! :)

Answer 8

\[20 - 4\sqrt{2} / 23 ?\]

Answer 9

is that it?

Answer 10

Absolutely! :)

Answer 11

thanks for your help! :)

Answer 12

Did you check the answer?

Answer 13

yes. it's correct! :)

Answer 14

Nm....I somehow forgot all about the 5+ sqrt(2)....I just did 5sqrt(2) for the denominator. I was like, I KNOW mine is right!

Answer 15

Lol its alright :)

Answer 16

Reading is fundamental :P

Answer 17

couldn't agree more lolll