## Kagome_gurl8 Group Title Use the Quadratic Formula to solve the equation. –x2 – x – 5 = 0 one year ago one year ago

1. Kagome_gurl8 Group Title

@Hero

2. Kagome_gurl8 Group Title

-x^2*

3. Hero Group Title

$–x^2 – x – 5 = 0$ 1st I would factor out -1: $-(x^2 + x + 5) = 0$ Then divide both sides by -1 $x^2 + x + 5 = 0$ Now I would use quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ a = 1, b = 1, c = 5

4. Kagome_gurl8 Group Title

Oh, thank you very much :)

5. Hero Group Title

Well, actually, hang on

6. Hero Group Title

When in doubt, compute the discriminant to see if this is even has any real solution

7. Hero Group Title

b^2 - 4ac = (1)^2 - 4(1)(5) = 1 - 20 = -19 No real solution

8. Kagome_gurl8 Group Title

Thats what i got also, i wanted to make sure i was doing it right. :)