## anonymous 5 years ago need help with quadric equations please !

1. anonymous

$-1 +/- \sqrt{-15}/ 2$

2. anonymous

what is the equation?

3. anonymous

I just listed it above--I already filled in the numbers and broke it down the the best of my ability. it is simplifying radicals on the right side that I am stuck on...

4. anonymous

the +/- part is where they are a fraction--one over the other. did not find a button to set it up that way. haha don't want to cause any confusion. the other slash line is the fraction line where 2 is the denom

5. anonymous

$(-1+i \sqrt{15})/2$ and $(-1-i \sqrt{15})/2$

6. anonymous

7. anonymous

how did they get that?

8. anonymous

The original problem was x^2+5x+4?

9. anonymous

If so then the quadratic equation says: [-5+-√(5^2-4(1)(4))] / 2(1) (-5+-√(25-16))/2 (-5+-√(9)) / 2 (-5+-3)/2 which is x = -1, -4