# Math Help - Cancelling roots when dividing.

1. ## Cancelling roots when dividing.

I'm having issues understanding the cancelling in the question:

(3-(root)12)/2
I get:
(3-2(root)3)/2 This is the answer in the book but can i not simplify it further to 3-(root)3 ?

2. Originally Posted by t-dot
I'm having issues understanding the cancelling in the question:

(3-(root)12)/2
I get:
(3-2(root)3)/2 This is the answer in the book but can i not simplify it further to 3-(root)3 ?
no but you can make it like (3-2(root)3)/2 = 3/2 - (root)3

in latex

$\frac{3-2\sqrt{3}}{2} = \frac{3}{2} - \sqrt{3}$