Question

Does this answer look right??

5
___
8-✔5

My answer:
5✔5
___
3
a minute ago

Answer 1

\[\frac 5{8 - \sqrt 5}\]
if you multiply by conjugate
\[\frac 5{8 - \sqrt 5} \times \frac{8+\sqrt 5}{8+\sqrt 5}\]
is that what you did?

Answer 2

Oh I just multiplied by the ✔5... So u do the whole thing to top n bottom?

Answer 3

yup

Answer 4

if you have sum/difference in the denominator you multiply by the opposite

Answer 5

in this case, you have subtraction...so you multiply by addition

Answer 6

Then my answer would be
40✔5

Answer 7

close...but no

Answer 8

if you multiply those... \[\implies \frac{5(8 + \sqrt 5)}{(8-\sqrt 5)(8+\sqrt 5)}\]
expand the numerator by distribution...expand the denominator by difference of two squares

Answer 9

anyway, i have to go now so i hope you luck in solving this

Answer 10

Ok

Answer 11

(8+√5) (8−√5 ) = ......?