Post by: Homer J on January 21, 2011, 05:46:08 pm
√8-2√3 * √8+2√3 (there should be a continuing line from the square root sign before each 8 so its a surd within a surd)
(3/√5 - 3) - (2√5/√5 + 3 )
cheers
Post by: Pixon on January 21, 2011, 05:53:13 pm
=root( (8-2√3)*(8+2√3) )
=root( 64-4*3) <--DOPS
=root(64-12)
=root(52)
=2root(13)
(I may not have understood your question... :/)
Edit: oh missed the second question
(3/√5 - 3) - (2√5/√5 + 3 ) <----what kind of question has 2√5/√5? isn't that just 2?
=3/√5 - 3 - 2 - 3
=(3root5)/5 - 8
Post by: Homer J on January 21, 2011, 06:14:07 pm
For question 2 its (3/(root 5 minus 3)) - (two root five/(root 5 plus 3))
Post by: brightsky on January 21, 2011, 06:29:07 pm
Post by: Homer J on January 21, 2011, 06:30:42 pm
Post by: Pixon on January 21, 2011, 06:34:50 pm
Post by: Stroodle on January 22, 2011, 01:51:09 am
Yeh...we should both learn Latex some time. :P
Or just use this: http://www.codecogs.com/latex/eqneditor.php :)
Post by: Pixon on January 22, 2011, 02:24:43 am
Yeh...we should both learn Latex some time. :P
Or just use this: http://www.codecogs.com/latex/eqneditor.php :)
lol... funnily enough I posted that link in another thread 20mins before writing up the solution on this thread. Fail laziness on my behalf. :P