Surds Question

1. Oct 17, 2005

james_rich

Hey having a bit of trouble with this question, not sure what to do!

QUESTION - express the fraction in the form a + b rootc / d

3 + root24 / 2 + root6

------------------------------------------
(3 + root24 / 2 + root 6) x (2 - root 6 / 2 - root 6)

Simplifying gives

(6 - 3root6 + 2root24 - root144) / -2

(6 - 3root6 + 2 x 2root6 - root144) /-2

is this right so far? the problem i am having is simplifying the root144 to a root6 inequality!

2. Oct 17, 2005

Tide

HINT: $\sqrt {144} = 12$

3. Oct 17, 2005

james_rich

D'oh!! that is so easy!!

I think i tried to over complicate it! My Brain hurts!! I've stared at this piece of paper for the last 10mins!!

Thanx a lot, i can carry on now!

Forgive the stupidity!