anonymous 5 years ago need help finishing up this quadratic equation!

1. anonymous

$-7y ^{2}+4y-2=0$

2. anonymous

I am at $-4 + or - \sqrt{-40} \over -14$ Any one able to help me with where to go from here? and whether this is correct or not?

3. anonymous

it doesn't look right since you suppose to have a real number. Can you please show us the original function.

4. anonymous

I checked it and it's right. The only thing I can see to do is that radical... It would come out as 2 times the root of ten.

5. anonymous

would the 2 and 10 be positive or negative?

6. anonymous

sorry, 2i times the root of ten (:

7. anonymous

okk awesome. Thanks. is the denominator positive 14 then? so my 2 answers would be, $-4+ or - \sqrt{2i} over 14$ and the second answer would be the same, except root 10 instead of 2?

8. anonymous

sorry, I just am not sure exactly what the answer should look like, i have to answer it in an online assignment and i wanna make sure to get the right format

9. anonymous

$-4 + or - 2i \sqrt{10}\over -14$

10. anonymous

sorry it took so long. But this counts as two answers since it's + or - as well.

11. anonymous

that's ok. thanks!

12. anonymous

yup :D

13. anonymous

and are they non real?

14. anonymous

since theres a negative number i assume so

15. anonymous

i'm not quite sure but i'd say since there's an imaginary number in there, it's nonreal.