1. anonymous

|dw:1331578752363:dw|

2. anonymous

$\sqrt{15}-\sqrt{15*45}$ just multiply the things inside the root and there you go!

3. anonymous

sqr root of 15 is 3.8729833462074168851792653997824 (feel free to shorten that :)) and the square root of 45 is 6.7082039324993690892275210061938 (again, feel free to shorten)

4. anonymous

So what exactly is the answer?

5. anonymous

well, we kind of gave you everything you need to know. get out your calculator!