## anonymous 3 years ago Simplify the following

1. anonymous

$\frac{ 7\sqrt{5}-9\sqrt{5} }{ \sqrt{5}-\sqrt{3} }$

2. hartnn

what have u tried ?

3. anonymous

Nothing yet, this was a longer expression. This is as far as I was able to simplify it. But I'm certain it's meant to be simpler than this.

4. hartnn

multiply and divide by root 5 + root 3

5. anonymous

|dw:1351744179569:dw|

6. hartnn

7 root 13 ? how ? and last term = -9*3

7. anonymous

Right, sorry. 7 root 15. and -9*3

8. hartnn

it should be 7root 15

9. anonymous

|dw:1351744442302:dw|

10. anonymous

|dw:1351744481155:dw|

11. hartnn

absolutely correct! good :)