1. Oct 22, 2009

montoyas7940

1. The problem statement, all variables and given/known data

Simplify $$\frac{-2\pm\sqrt{-56}}{30}$$

$$\frac{-2\pm 2i\sqrt{14}}{30}$$

$$\frac{-1\pm i\sqrt{14}}{15}$$

Is this correct?

2. Oct 22, 2009

Staff: Mentor

Yes. I would write it with =, though.
$$\frac{-2\pm\sqrt{-56}}{30}~=~\frac{-2\pm 2i\sqrt{14}}{30}~=~\frac{-1\pm i\sqrt{14}}{15}$$

3. Oct 22, 2009

montoyas7940

Thank you, I am very rusty...

4. Oct 23, 2009

Staff: Mentor

Well, it doesn't show. There was no problem with your work. I was just polishing it a bit.