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

@Hero

2. Kagome_gurl8

-x^2*

3. Hero

$–x^2 – x – 5 = 0$ 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

Oh, thank you very much :)

5. Hero

Well, actually, hang on

6. Hero

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

7. Hero

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

8. Kagome_gurl8

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