Division / fraction and sqrt?

0 ⤊

18 + sqrt 567
------------------
9

and

-9-sqrt -108
----------------
3

and finally

6 - sqrt20
-------------
2

2007-01-11 15:14:36 · 2 answers · asked by CookFrNW 3 in Science & Mathematics ➔ Mathematics

[18+sqrt(81x7)]/9
=(18+9sqrt7)/9
=2+sqrt7

-(9+sqrt(36x3))/3
=-(9+6sqrt3)/3
=-3-2sqrt3

[6-sqrt(5*4)]/2
=(6-2sqrt5)/2
=3-sqrt5

2007-01-11 15:20:53 · answer #1 · answered by Maths Rocks 4 · 0⤊ 0⤋

sqrt of -108 is 9i

2007-01-11 23:26:48 · answer #2 · answered by THINKER 2 · 0⤊ 0⤋