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# stuck on rationalising denominators watch

1. Attachment 727102Attachment 727104

Question H, I went wrong somewhere but I can't figure out where? Thank you in advance
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3. Check -2sqrt(6)*3sqrt(6) from expanding the numerator
4. (Original post by RDKGames)
Check -2sqrt(6)*3sqrt(6) from expanding the numerator
-2 times 3 = -6
root 6 x root 6 is 6
-6 x6 = 36

so the top one is now 2+3root6 - 4root6 - 36
which = 2-root6-36
which is -34-root6 over - 50 do i just flip all the signs to positive then?
5. (Original post by Gent2324)
-2 times 3 = -6
root 6 x root 6 is 6
-6 x6 = 36

so the top one is now 2+3root6 - 4root6 - 36
which = 2-root6-36
which is -34-root6 over - 50 do i just flip all the signs to positive then?
If you want.
6. Hi

2 mistakes

+3root6 - 4root6 is - root 6 not - 7root 6

Also 2 root 6 x 3root 6 is 36

QUOTE=jamesgillian123;76258328][/QUOTE]

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