Does this answer look right??

5
___
8-✔5

My answer:
5✔5
___
3
a minute ago

Question

Does this answer look right??

5
___
8-✔5

My answer:
5✔5
___
3
a minute ago

lgbasallote · Answer

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

anonymous · Answer

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

lgbasallote · Answer

yup

lgbasallote · Answer

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

lgbasallote · Answer

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

anonymous · Answer

Then my answer would be
40✔5

lgbasallote · Answer

close...but no

lgbasallote · Answer

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

lgbasallote · Answer

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

anonymous · Answer

Ok

anonymous · Answer

(8+√5)  (8−√5 ) = ......?