Question

Help please? :) http://prntscr.com/d8ngsz

Answer 1

first step: re-write the radical as a quotient of 2 radicals

Answer 2

now, do you know how we can get rid of the radical sign in the denominator?

Answer 3

Not sure because you can't multiply anything to get 7 :/

Answer 4

hint:

Answer 5

any ideas what we can multiply by sqrt(7) to get 7?

Answer 6

ummm... Nope? :/ Maybe 1 and 7?

Answer 7

take another look at the hint

Answer 8

if we have

sqrt(A)

we can multiply it by

sqrt(A)

to get

A

Answer 9

so, if we have

sqrt(7)

how can we get 7?

Answer 10

multiply by 7?

Answer 11

not quite

Answer 12

follow the pattern: